Author's Notes:

Contains: incest, seduction, kissing, sixty-nine, vaginal sex, cum in womb, mild cum inflation, caught in the act, forced surprise orgasm, amazing parenting skills

If any weird formatting got missed, let me know. Uploading the chapter from Gdocs caused a trainwreck of weird errors I had to fix. No idea why.

This chapter kind of ran away with itself. Hope people enjoy this one. Still heavy on sex, but it's becoming more story-centric than earlier. That moment when you realize your clopfic has become a story with sex...

I love how this one ends.

It was a late hour. The usual Hearth’s Warming celebrations were long over.

Shining Armor made a slow and quiet walk down the familiar wood-paneled hallway of the home he grew up in. His parents had long since gone to bed. He slipped out of the room he had lived in for his entire colthood, another familiar place as his destination. He looked back over the early years of his life spent in this house. Countless memories he would always cherish were made in just a single hall.

A warm smile came to his features as he recalled playing games with Twilight. He remembered things that one could describe as a lifetime ago for them. A time when she was not long out of diapers, and himself yet to get his own cutie mark. He never admitted it out loud to anyone just how much he loved the games he’d played with his little sister. How she’d squeal with delight when he pounced at her without warning, when she tried to be stealthy and sneak up on him. Or the times he pretended he didn’t hear her coming up behind him, the hardwood floor calling out her steps. Letting her pounce on him instead for the sounds she made. Making her squeal with laughter was once the sound he treasured above all others.

His smile grew a little more at his next thought, his cheeks warming in the private space of the darkened hallway. Shining’s new favorite sound lay split between two that were almost the same, if he was honest with himself. The sound he loved most was the sounds of an orgasm taking hold over Twilight or Cadence. Hearing each of them gasp, mewl, or scream because he’d given them pleasure. He doubted he would ever get enough of either.

The faintest sigh escaped as he neared his sister’s foalhood bedroom door. She was staying in her old bed for the holiday. His only real regret about all that had happened was just how hard it was to meet up with Twilight. How hard it was to meet for more than a lunch every month or so ever since pure blind chance brought them a deep love to share. It seemed chance had also let their free time match up just long enough to meet at Blind Date so they fell in love. To realize they would never let go of each other as lovers despite the challenges ahead. And ever since, they seemed unable to manage even a single private moment.

Now, they finally had a chance to reconnect after several months of little time to see each other.

It wasn’t Cadence’s fault, despite her role in events. Shining was given increasing high-level official duties and diplomatic appearances. His CO was the Captain of the Guard, after all. Upon learning that Shining had begun dating Cadence in private, General Hardass had begun to demand far more of him than before. Shining did recognize his CO was doing it to help prepare him. For what life would be like if, really more of a when, he married a Princess. Shining had also been summoned to a private meeting by Princess Celestia. He still heard what she had told him that day, those fateful words simple and heavy with importance. It was hardly more than a week ago now. After that meeting, it made all the more sense why he’d been working harder than was expected of his current position in the Guard.

Less free time, and a much more dynamic schedule. It made it hard to get any time away without going on scheduled leave. He felt a built up sense of guilt over having so many opportunities to spend time with his Cady, but not his Twily.

He was still a little surprised with how supportive Cadence was about him being in love with Twilight. She was often quite open in her trying to help him spend time with his sister. Even if it was just toying with schedules so he could squeeze in an occasional lunch date. And it was often at the expense of him spending the same time with Cadence herself. All she ever says about it is ‘because I love you both’ and gives me that same strange smile I can’t help but feel is hiding something. Sometimes she gets a look in her eye, and I swear she wants to come with me for some reason.

Shining stopped in front of Twilight’s door, knowing it was unlocked and she would be waiting for him. She’d held his attention with a sultry look in her eye earlier. She told him not to bother knocking on her door and to just come inside when he was ready.

He loved how much of a tease she could be when she wanted to.

Finally, they could have some private time together without worrying over interruptions. After having had no time to for a private chance to talk, at last they could. They hadn't even been able to share so much as a kiss for fear somepony would see.

A small wave of self-consciousness made Shining check himself over to ensure he looked reasonably his best. He took the time to smooth out his coat and mane a bit more. Even though he knew they would snuggle up in bed together, among other things. A quick breath check said the mint was doing it’s job as well.

He was stuck giving Twilight so little of himself most of the time. Because of that, he tried hard to give her his best whenever he could. The century old, early-edition, obscure enchanting reference he’d given her earlier contained a few hard to find rare spells left out of later versions. It was one he knew she’d been looking for. It had cost him more effort and bits than he let on, but it was well worth it. He would’ve gladly spent twice that if he could see her eyes glimmer so much every day.

Once he was as satisfied as he would get, he took a calming breath and reminded himself not to rush anything. Difficult though it was right now, they had every intention of being together for life. Later, they hoped to plan out and arrange their lives so they had more time for each other. They had a lot of time to make it work so they could be ready to have a foal together like they wanted.

Shining relished the anticipation of joining his sister in her bed. He let his magic quietly open the door to Twilight’s dimly lit room. The moonlight coming in through the window as the only source of light, casting all in a silver glow.

When he turned to the bed after the door shut, his breath caught at the vision that lay before him.

Twilight Sparkle lay on her bed with the covers pushed away, letting the chill of the winter’s night prickle across her body. She’d placed a silent charm in the hallway so she could be ready when he came in. Hiding under the covers for warmth until he approached. She would never so much as breathe a word of doing so, but she had looked at some Playcolt magazines and other relevant materials once plans had been set. All for researching the best way to tempt the stallion she loved on this night. It had been her naughtiest checklist ever.

Laying on her bed in a pool of silver moonlight streaming through the window, Twilight was resting on her left side. As she eyed him, her left forehoof was holding up her head. Her right lay just so over her side so her hoof seemed ready to caress her exposed lower belly beside the strategic placement of her tail. Almost as though she were about to rub herself intimately before his eyes.

A sultry smile graced her features as she tried her best to give him a subtle yet hungry look. One laden with confidence she didn’t feel, and half hidden in the shadows drawn by the moon. She had checked earlier with a mirror she’d placed by the door to make sure her face was angled just right. Now letting him only see half of her face in the moon’s silvery glow. The visible eye staring at him with the full intensity of her desire for him.

Her mane lay draped behind her, with a careful few locks allowed to hang in front. A delightful shiver of anticipation traveled through her. The wet lips of her sacred treasure felt the crispness in the air. Her tail was a paltry blanket against the chill as it teased him and hid her already aroused body from his view. Her right hind leg was turned up and set perpendicular to her left as she reclined, hind legs open to his eyes. Her position allowed him to see the full length of her prone form in an open invitation.

She had also ensured her scent was thick in air of the room and watched his nostrils flare. He took an obvious deep breath as the spell keeping it back from the door was finally allowed to roll over him. To let the scent of her arousal finish filling the area. The same spell would keep the scent of sex from leaving the room. Something she had every intention of putting to good use tonight. I want to feel you inside me again, big brother…

Judging by the floored expression on his handsome face, her effort to be seductive and sexy for him had paid off. She could see his shaft filling out beneath him. Further clear evidence of the effect she’d had. Twilight’s arousal climbed higher with a tingle in her core. She knew she would soon have his entire thick turgid length within herself. And she would feel him release all that wonderful hot semen inside her. All because she brought him to the peak of pleasure with her own body.

Her facade of confidence slipped for a moment. She was struggling to keep her own focus, finally getting to be alone with her brother again. Her last planned move to entice him left her lips as a wispy erotic promise. Her desire to make it perfect for him held, despite the nerve-wracking brief stutter that almost made her crack. She had practiced so many times with the mirror. She emphasized just the right words to tease him with exactly what she wanted him to do to her. “P-please, my love. I need you on this cold winter’s night, for I am quite desperately chilled. Will you please fill me with the heat of your love so I might feel it deep inside and be warm again?”

Shining found himself moving forward without quite recalling how to walk. The movement becoming a mystery like all other thoughts beyond the mare before him. He hardly registered his cock twitching beneath him. Already prepared for what was going to happen. The very idea of them talking first was now a long forgotten notion. Twilight had him completely enthralled with desire for her. He struggled to resist the urge to just leap upon her and make her scream for him. Cady, you just got a challenger for sexy. How is it I somehow have two mares of such unparalleled value? I am unworthy…

Reaching the bed, his eyes remained locked on hers as he got closer. Shining panted as he slowed down the closer he was. He savored the moment as his hooves touched the sheets and he drew near to her. Twilight turned her head to him as their lips finally connected. A faint, happy moan sounding in her throat as their tongues joined in their efforts. It was a kiss that was long overdue.

Just as Shining went to push her towards her back so he could really get started, he felt a gentle hoof push him back. Curious, he let her nudge him back and met her eyes. He already missed the warmth of her lips and tongue against his own. His voice was low, speaking through now heavier breaths. “What’s on your mind?”

Twilight’s eyes were half-lidded, a desirous smile on her face. “I want you in me, Shiny. I want to feel you fill me. But first, we should make sure each other is ready. Will you put that lovely tongue of yours to use and make sure I’m ready to receive every last inch of you?”

Shining felt a faint shiver run through him. He could only wonder where Twilight was getting all this from even as he smirked. “Twily, if you want me to taste your body again, you only had to ask.”

As he began making light kisses down her neck and chest, she made little coos when he nibbled on her. A matter of moments passed before he noticed a nudging touch against his body. Glancing up told him Twilight’s horn was active. Once she met his eye, she smiled with mischief as his hindquarters made a gradual move towards her head. A second later, he realized she had said they should make sure each other was ready. Finally registering what she was doing, he soon found himself laying on his left side beside her. Both their faces now close to each other’s sensitive areas.

Twilight found herself staring at the rigid length before her. She leaned in so she could rub her face against it. The time apart left her missing the special masculine scent that liked to linger in her fur until she washed. At last, she could relish the warmth in his shaft again and did so. Her lips soon brushed across his flare, feeling his precum smearing over them. Licking her lips clean, she let more rub into the fur around her mouth and started to nibble at his flare. It was a little hard to focus when feeling her brother’s hot breath and lips tickling around near her marehood. He was taking his time like she was.

Rather than diving right in, Shining enjoyed the act of worshiping her body. He kissed, nibbled and licked around her inner thighs and belly in a vague spiral. Drawing ever closer to where the end of her tail still concealed her soaking core. He could feel the quiver of her muscles and the little gasps escaping her. Even while he tried not to let the feeling of her exploring his cock steal too much of his focus. A gasp of his own accompanied a small thrust against her lips when he felt her tongue drag across the head.

Not to be outdone, Shining let his tongue run over the sticky hairs of her tail hiding her marehood from view. His magic working slow as he pulled her tail out of the way and sucking some of her arousal away from the strands. A small shudder went through her as he began to nibble on the petals of her flower. Growing hungry for more of her excited taste on his tongue.

As she tongued the base of his shaft, Twilight relished the feel of his hot tongue making direct contact. The temperature difference from the chilly air was tremendous. The slippery touch of his mouth was almost burning by contrast.

Pushing things along, she began licking up the length of his shaft as her free hoof made slow strokes. Her lips giving extra attention to his sensitive medial ring before moving on. With a careful motion, she let her nose drag up the underside, a hoof in place to control any twitches of his body. She let the head of his cock drag over her nose and lips. Letting his built up fluids smear across them and pulling herself away. Twilight let his anticipation build as she licked her lips and nose clean of his taste. Then she opened wide to slip his entire flare into her mouth in one motion and began to nurse on his tip. Her tongue traveled all over the sensitive surface to taste as much of him as she could.

Shining couldn’t resist letting out a groan as he felt her lips close around his tip. Hips thrusting forward in response and finding she didn’t resist or stop the motion. His sister letting him slide deeper into her mouth until he felt the back of her throat. As she finally gave him a signal to hold still, she began to bob her head. He returned his attention to her slippery marehood. He followed her cue by letting his tongue slide right between her lips. He grazed his tongue across her entrance to tease her. The moan he felt through her mouth around him had him repeating it. Probing at the door of her inner passage with his tongue as he spread her lips apart. After a moment to lash his tongue against her clitoris, his tongue stabbed inside her. The sudden motion caused her to arch her back as Twilight gasped in pleasured surprise. His tip fell from her open lips as he drew out her reaction.

Twilight needed a second to collect herself. She felt her brother’s tongue starting to stir her up far more than she already was. Soon slipping his length back into her mouth and bobbing her head with greater urgency. This time, she didn’t stop as she let him in. Only slowing for a deep breath before she let his flare slip into her throat. When she began trying to swallow by reflex, she just let him slide in even deeper, sucking him in with each gulp. Her tongue lashed against his medial ring as it passed. Twilight shuddered at the feeling of him sliding across her tongue as he stretched her throat wide.

Struggling to keep moving, Shining moved his tongue around everywhere inside her. He kept some of his attention to when she was getting close. He tried to restrain himself. Yet, feeling Twilight’s throat constricting as her lips bumped against his base was more than he could stand. He had let himself go without for days in preparation for tonight. Then just when he thought his tingling flare was going to grant her his seed, his climb stopped. Twilight took it slow as she pulled herself off of his length. Her tongue swirling around his tip before she released it. All he could do was pant, bewildered at how he hadn’t gone off even when he had been on the edge.

Once she’d let his tip free, Twilight took a full breath as her horn dimmed. Getting so close left her quivering a little from her own interrupted peak and she gave a soft hum. “Mmm… Can’t have you releasing too soon, big brother. I’ve been waiting too long to feel you pulsing inside me as I orgasm around you. Turn around for me?”

Swallowing more of her unique flavor, Shining lifted himself up and laid back down beside her on his right. It let them face each other and he shuffled closer until he lay pressed belly to belly with her. He felt his length laying against the soft, warm fur of her stomach. He enjoyed how the base of his shaft pressed right against her sopping marehood. The way those lips molded part way around his girth hinted at the way they would welcome him inside soon. “Hah… I’m guessing you did something to stop me from going off?”

Twilight let out a soft giggle, staring into his eyes with loving desire. “Yeah. I can get a taste of your semen later. This first time after so long, I want it all inside me where it belongs. And… Um…”

He looked at his sister as she seemed to grow a bit bashful, her cheeks blooming before she spoke.

“This time, no spells or anything between us. Make love to me as we snuggle up under the covers and keep each other warm.” She nosed in under his chin as she pulled the blankets up over them. The cold that had been seeping into them despite their intimate efforts soon began to recede. Her every breath caressed his throat in soft airy touches. “I might not be in estrus this time, but there’s also nothing protecting my womb right now. I want to be absolutely full of your potent sperm, big brother.”

She pulled back to look him in the eyes, her own misting as she gave him a smile that expressed how much she loved him. “Please remind me that this isn’t just a dream. We can play with sex spells after this and some time to talk. Finish this last little part of making me your mare, Shining.”

All he could do was wrap his forelegs around her and pull her in closer, nuzzling her with a tender smile. When the moment felt right, he pulled back to meet her eyes.

With a slow movement, his hips drew back. One hoof nudged his shaft down. His tip dragged across the fur of her quivering belly until it found the slippery gate to her depths. Their eyes remained locked as gentle pressure spread her open for him. Her warm folds soon closed behind his flare with a faint squeezing tug. It was like her body was glad to hold him inside again. Quiet sounds escaped as they joined their bodies once more. Their smiles small yet glowing at finally being together again.

Gentle thrusts saw Shining’s length sink further into her body. Soft pants let their breaths trace across each other’s mouths. They did not need a kiss to feel more intimate. Twilight first gave a faint gasp when his medial ring slipped inside. Then a helpless groan of relief as she curled against her brother. He went still as he finished sliding into her depths, his tip resting against her cervix.

It had been months.

Months had gone by and they were finally joined again. If not for the delicious tension of promised pleasure, the calm relief both felt could have let them fall asleep. There was no need to move again at first. Just laying on their sides together and sharing warmth almost as one body. An almost empty feeling now driven away with a sudden realization of fullness. A difference unnoticed until it changed in that moment and their now renewed physical union. They didn’t even notice their heartbeats falling into step with that of their partner.

Shining stroked her back with a hoof, both of them now covered by up to their necks by the blankets of her bed. The steady motions of her inner muscles were a loving massage. A request for what he would provide her with soon enough. He tried to say something, but the words died in his throat before they could form. Shining's eyes misting as her heard her faint sniffle. Deep emotion shone in her eyes when she finally looked at him again, filling him with a different kind of warmth. With a small bit of his magic, Shining brushed at a wayward lock of the mane he had known for so much of his life, tucking it behind her ear.

An unspoken cue saw both of them begin to grind against each other. Twilight soon found herself trembling whenever his tip pressed against her cervix. She relished the knowledge that everything was natural tonight. Nothing between them. She let herself indulge in the wish that it was in the middle of spring, instead of Hearth’s Warming and winter.

Thoughts floated across her mind of getting to share each other’s bodies down the road. To feel him pulsing inside during her estrus in a few years as he gave her his foal. Just the idea made it more intense. Her brother would have to get used to sleeping next to her once he finally could get her pregnant. There was no way she’d leave his side by choice after that. Once they got their lives in position to raise a foal together, they planned to. It would just take time. The rewards were worth the wait. At least, that was her most desired fantasy. Twilight hoped fantasy wasn't all she'd ever have.

Tonight at least, his seed would rest in her womb. She needed to feel it again so much. To have the warmth of his thick semen sliding inside her body, filling her womb until some point in the morning. Twilight made a soft gasp from the feel of her brother moving inside her as he built them up towards orgasm. The only stallion she desired filling her mind at the same time he worked to fill her body. Please, Shining…

The feel of her slick tunnel, combined with their earlier close call, had Shining feeling his peak drawing near. From how she was holding him and quivering, he knew Twilight wasn’t far off either. He made slow, steady thrusts into the wet warmth she surrounded him with. Only the faintest sounds of their union heard alongside their quiet pants. There was no need to rush as he felt his widening flare touch her deepest gate with each return. He realized his sister was going to climax when he poured his claim inside her. Both enjoyed knowing there was nothing stopping anything tonight. Her body was his.

He had every intention to make love to her during her estrus down the road. And to continue doing so until his foal was inside her. Until they were ready though, turning her into a drooling mess of pleasure would suffice.

Twilight could feel herself rising higher as his flare grew. She had to resist the urge to make him go faster. To make her cry out his name behind the bubble of silence that kept all their sounds of pleasure within the room. She would get there soon enough. Their still locked eyes never shifting even as they panted harder as the moment drew near. Another unspoken cue and their heads angled. Their horns touched. Both found themselves unable to look away from the rising storm of pleasure the other was feeling. His pace picked up, drawing more of his length back before returning. The ball of tension inside her was growing tight.

Shining thrust one last time as he twitched within her passage. Both of them narrowed their eyes as they gasped. Their magic mixed between their horns with a faint tingle. Whispers of what the other felt crossing their connection. His buried length at last sent his seed crashing against her cervix.

Twilight clamped down her inner muscles. His warm flood pushing her over the edge of climax. Orgasmic spasms left her trembling against him, breathless. Much to her own pleasure, the feel of foreign warmth slipping deeper within made itself known. Her body was his.

A low whine sounded in Twilight’s throat. The knowledge he had claimed her in every physical way possible drew her lips to his as her eyes fell shut, tongue invading his mouth. Her inner muscles kept rolling along his shaft, trying to milk every drop out of him. Doing what she could to squeeze more of it past her deepest gate as it began to slip past his flare to fill the rest of her quivering tunnel.

She needed it filling her, estrus or not. She wanted him to know his essence made it all the way through as she tried to squeeze him harder. The hind leg hooked around him trying to push him deeper as his potent gift was working it's way into the womb that belonged to him. Twilight's resistance finally broke as her magic rolled along his shaft down her tunnel. She took the mass of seed and pushed it past her cervix in a steady flow, welcoming every drop into her core.

She hoped he felt her putting all his seed where it belonged. Twilight shuddered at the liquid warmth that proved she was his again. She had no doubt that no other stallion’s seed would ever touch her.

Someday, she hoped to be free to let him breed her. Twilight wanted to feel him worshiping her pregnant belly as he made love to her. Wanted him to know anything he wanted of her was his at a word. She kissed him more fiercely. How she wished he’d start pulsing inside her again a second time. Oh Celestia, is something wrong with me that all I want is to swell up with your seed again? Make me burst on your cock more, big brother!

Shining couldn’t help the shudder that traveled through him, unaware of his sister’s thoughts as he met her passionate kiss. He felt the tickle of magic that passed along his length inside her. Then a shift around his tip touching her cervix. It made him suspect she had shoved his cum into her womb again. It was beyond arousing to know she wanted it that deep inside her so much. If I wasn’t already coming down from one…

Their shared grinding motions to prolong the moment were slow to taper off. Soon, they were panting softly as they stared into each other’s eyes, content to remain connected. There were a thousand things to say, yet not a word needed to be said.

For Twilight, it was relief and release in finally having him all to herself again. Just savoring the feeling of being his mare after having to hide how much she loved him whenever she saw him.

For Shining, it was relief and reassurance that, despite the struggle over more than half a year, their love was still powerful. Just like when they shared so much at the start back in the spring.

Twilight stared into her brother’s eyes, sated for the moment. Her face held a faint, lazy smile of sexual bliss from having his semen in her womb once again. If she wasn’t sure of it being her fetish before, she had no doubts of the truth now, speaking in a low, husky tone. “I want to be swollen with your seed by morning, Shiny. Think you’re up for making me feel like a thoroughly satisfied, well-bucked mare again?”

He gave a sly smirk in return. “Give me that stamina spell and I’ll keep you up all night if I have to. I won’t stop until you say so.” Then he pulled her in close, tucking her head under his chin. “I’ve missed getting to show you how much I love you, Twily.”

“Mmm…” Cuddling a little deeper into his strong chest, Twilight felt content. The warmth of what he put inside her and snuggling in his embrace him gave her great relief. She felt the tension and stress of waiting just melting away like she was breaking through the surface of a pool for a breath of much needed air.

After a short time to focus on that, she gave her brother’s neck a nuzzle before she spoke. “You know, Princess Celestia told me about her private meeting with you. You’re to be officially declared as the successor to the current Captain of the Guard next month. And that Captain Hardass will retire just before spring. I’m proud of you, Shiny.”

Shining gave a soft hum, one hoof making slow strokes along her back. “It’s definitely going to be a change. Mostly just means I’ll have even less free time, more than anything else though. Hardass has been giving me most of the relevant workload since you and I figured things out. I’m sorry I haven’t been able to give you the time you deserve, Twily. I’d even started planning on setting up a vacation trip with you for this coming summer. You know, before my responsibilities changed. I’d hoped to steal you away for a week somewhere that nopony would care. A place far enough where we wouldn’t have to hide for little while.”

“While that idea sounds lovely, I do understand. Princess Celestia has been giving me extra assignments for months, too. I think there’s something important coming up that she hasn’t mentioned to me. I’m not certain, but it might have something to do with the next Summer Sun Celebration being the 1000th year. I’m wondering if she wants me to attempt some kind of special magic for the festivities as a test. It’s just more general studies so far." Twilight sighed and held her brother a little tighter, her voice growing a touch forlorn. “So… You and Cadence, huh?”

Giving her a soft squeeze as he winced, Shining told her the truth. “Yeah. We’re dating. I’m sorry I couldn’t tell you sooner. We're keeping it out of the public view for now. I couldn’t risk somepony overhearing when out to lunch with you. I wanted to tell you, but earlier today was the first time we’ve been in any kind of private space together in all this time.”

Twilight nuzzled him a little harder, unsure how she felt. On one side, she was thrilled that her brother was dating somepony she herself thought the world of. She was glad he could have somepony so wonderful that could love him out in the open. On the other side, she was jealous. She wished it was her that got to have him without worrying over how others might react. She also worried he would have to let go of what they had at some point.

“I, I know you tried to tell me earlier that it doesn’t change anything between us, and I do feel a lot more sure of that, now that I have proof sitting inside me…” Twilight gave his half-hard cock a squeeze with her inner muscles, earning twitch. “Just... I’m still worried you’re going to tell me we have to give each other up. I won’t ask you to lie to her for us to stay together. I want to know everything we have is honest and real and never anything to regret. I-If…,” Twilight took a steadying breath as she gathered herself. “If you… Shiny, I can let you go if I have to. I won’t be able to live with myself if I forced you to start being dishonest about us. I feel guilty enough as it is already. I won’t let our love be tainted like that.”

Shining just smiled, still rubbing her back as he held his sister close. “Well, it’s a good thing Cady actually gave me explicit permission to keep loving you, isn’t it?”

Pulling back until she could meet his eyes, Twilight stared at him with a look between confusion and alarm. “Wait, you told her about us?! When? What did she say? She’s not going to tell anypony, is she? And why didn’t she tell me she knew?! I had a chance to spend time with her two weeks ago!”

“Twily, shush! Those panic attacks might be kind of adorable, but you stop that right now.” Shining touched his nose to hers with a grin and rubbed against her until he saw she was ready to hold her tongue, then leaned back with calm confidence. “First, I actually told her two days before you and I had that dinner to talk things out and we made love on the couch. Cadence and I actually started dating the same day I told her, in fact. I was losing my head and I had to spill my guts to her because I’d been such a mess that she wouldn’t let me off the hook. And no, she won’t tell anypony, so don’t worry about that.”

Shining then gave his sister a brief kiss. “I just told you she gave me permission to keep loving you. And what she thinks? Well, who do you think is responsible for me having an open spot in my schedule at the same time you did so I could meet you for the occasional lunch over the past several months? She has tried to help make sure I see you as often as possible. Usually, it's by having those same lunches alone as a result, knowing she gets to have me more often than you do. Twily, she genuinely wants you and me to stay together. While she can’t do much, she’s even trying to help us. Cadence didn’t say anything because we both felt it was best if I told you myself. If we’d had a private moment sooner, I would have told you then. I’m sorry it’s taken until Hearth’s Warming to do it.”

Staring at her brother for several seconds, Twilight let it filter through her mind. As she did, she tucked her head under her brother’s chin again. She just wanted to be held for a little while.

After all the freaking out in private about what might happen if they were found out, Twilight was at a loss on how to respond to a positive result. Still, despite the relief, it made some of her feelings of guilt grow. She loved Cadence. A lot. Even harbored secret wishes of getting to be in love with the mare, as unlikely as that was. Just the idea she could be doing her wrong by accident made her heart ache. Twilight was grateful that wasn't a problem after all.

Of all ponies in her life, knowing Cadence approved of Shining and herself was growing into a relief so deep it brought tears to her eyes. The ponies we love rejecting us when finding out was my absolute biggest worry.

Heaving a sigh with her nose buried against his neck, Twilight found her voice again. “I guess Cadence and I have a lot to talk about the next time I can meet with her. But are you ok dealing with two mares? One of whom could even ruin your career overnight if we’re discovered?”

Shining gave her a firm squeeze, earning a tiny squeak from his sister. “Twily, I don’t care about that. What we have matters more to me than a Guard career. As for handling two hot mares at once? Well, that part’s easy. I’m mean, it’s me we’re talking ab--ouch!”

Twilight’s horn dimmed after giving his ear a sharp flick to express her thoughts, face still buried in his neck as she hid her smile. The easy tone of his response said more than his words.

A hoof massaged the sting in his ear for a few moments before returning to her back. “Ok, ok. Guess I’m not allowed to be proud about having two amazing mares that somehow think I’m worth enough for both be with me at the same time. I get it. And here I thought stallions were emancipated. At least the title of ‘love slave’ is one I can live with. How else can I serve my mistress?”

Pulling her head back, Twilight bit her lips to keep her giggles under control as she nuzzled him. Whenever he made her laugh, the whole world seemed brighter. One hoof drew small circles in his chest fluff as she gave him a sultry look. Her horn lit up to start adding her spells. “Alright enough, you goof. I need more. We can have another talk after. Your mistress now demands you lay her back and get to work on making her scream for half the night. I demand more of you inside me, BBBFF.”

Shining gave a low hum and a sly smile, pushing her on her back as he rose up over her. His cock, now recovered, hilted fully inside as he rocked his hips against her to get started.

“Good thing my mistress gets what she wants.”

Twilight inhaled a deep breath of cool morning air as she stirred. As she did, her nose filled with her brother’s scent as she lay tucked in under his chin. With a faint nuzzle, she tried to bury herself a little further into his embrace. How she had missed the feeling of waking up next to him, whether during the night or the following morning. It was just the third time she’d had this chance.

His forelegs held her with a gentle firmness even as he slept. It made her feel secure to know he had the instinctive need to keep her close. Giving a small squeeze of her inner muscles, she also thrilled in knowing his morning wood lay inside her. The hind leg she had over him pulled him the tiniest bit closer, enjoying him slipping deeper into her body.

He had only left her marehood twice last night. When the urge to taste him had taken her. She had delighted in teasing him until he filled her mouth, savoring how his warm semen slid down her throat when she swallowed it down. The second time, she had hung her head off the edge of the bed as she lay on her back. He had hilted in her throat, filling her stomach in a far more direct manner. She still didn’t feel hungry. If it’s not too late that our parents might be up, maybe Shiny can give me breakfast. At least, if I can let him slip out without one last round instead. We won’t have another chance to do this for possibly a whole year.

Shining drifted back to the waking world on a slowly descending cloud. Even in his half-awake state, he immediately registered it was Twilight, not Cadence, that lay wrapped in his forelegs. The warmth of his sister pressed into his chest made for a wonderful sensation to wake up to. Feeling her slow steady heartbeat through her marehood as it hugged his cock was also pretty good.

Taking a deep breath with his nose against her mane, he cracked his eyes open just to see the top of her mane. Just seeing the rose, violet, and deep blue of it drew a faint smile to his lips. They were forced to be apart so often. For the moment at least, he felt like a sort of vindication after all the time he spent missing her. He probably shouldn’t love her the way he did, but he’d personally travel to Tartarus and back if he could see another heartfelt smile on her face. Making her cry out in pleasure so many times last night certainly had its charms, too.

On that thought, Shining let a hoof trace across her coat, sliding along her side until he felt the side of her swollen belly. All the cum he’d put inside her marehood was still sitting in her womb. He felt a fair bit of pride over it. Knowing how much of his seed she had been so eager for him to fill her with caused his shaft to twitch inside her. The faint gasp she made under his chin also told him she was awake. The day will come, Twily. We’ll get things sorted. Then you can be swollen with the new life we’ll make together. Don’t know how things will work with Cadence until the three of us can sit down together, but we’ll figure it out.

Twilight smiled when her brother twitched inside her. She knew right then she needed him to fill her one last time before they parted again for Celestia knew how long. To that end, she pulled his lower body closer as she pressed towards him. Feeling him bottom out inside her body made her release a happy groan.

She pulled her head back to look at his face and met his eyes with a half-lidded sultry stare. “I think we have time. One last quickie before slipping back to your room, Shiny?”

Shining responded by pulling her into a kiss, both their eyes slipping closed as tongues their entwined. He was gentle as he pushed his sister onto her back. With deep, powerful thrusts to maximize sensations, Shining set to work. Starting the day off by making love to Twilight was telling him it would be a fantastic day.

As the two of them strained against each other at a steady, unhurried pace, they kept up their kiss. Twilight broke it as her head tilted back when she felt both of them getting close. A soft gasp escaped her lips, panting at the feel of her brother sliding deep into her body. His flare was starting to expand as he got ready to burst inside her again. She loved how his heated pulses could often trigger her orgasms, leaving her own wanting body milking him for everything he had. Their past experience told her the steady pace was going to give them a strong peak together.

Then he was just a thrust or two away from release. Twilight readied herself to burst all over him in return.

It was in that critical moment, the siblings froze, eyes snapping open to the sound of a throat clearing nearby.

Sharing a mutual look of utter horror, they slowly turned their heads to the side.

Twilight Velvet, their mother, was standing in the room with a blank expression on her face as she stared right back at them.

The silence stretched for several seconds as the two sides stared at each other.

Mortified looks in their eyes and their faces bright red, Shining and Twilight finally blurted out in unison, “Uhh… It’s not what it looks like?”

Velvet was slow to react, her left brow arching up in a gradual manner before she spoke. “Is that so? You mean to tell me that, if I were to look under those blankets, I won’t see a brother’s bare penis fully inside his sister’s aroused vagina, and was about to ejaculate inside said vagina, where I am reasonably certain said brother has put his semen several times already?”

As their ears went flat against their heads, both siblings managed to blush even harder as they felt the world starting to cave in on them. They didn’t even know where to begin, let alone what was going to happen now. Their mother could be unpredictable in the extreme at times.

Velvet frowned. “Exactly how long has this been going on? Be honest with me, or it will just make everything more difficult. Were you two sleeping together even while you lived here?”

Shining swallowed a lump in his throat. The nervous shifting both he and Twilight were doing kept him pretty close to the edge of climax in a maddening additional torment. Too far to simply finish, but too close to calm down.

He also did not do something as coltish as squeak before getting his voice under control to respond to his mother’s inquiry. Nopony could prove a thing. “It… Ahem, it, uh, started this past spring.”

Twilight spoke up in a meek voice, not quite in control of herself. “It was all an accident, Mom! We somehow met at The Blind Date Company and we fell in love before we found out! Neither of us could give things up even though we know how everypony would react! Don’t make me give up Shiny, please!”

Velvet blinked at seeing the tears in her daughter’s eyes, then snorted and waved her hoof in a casual dismissal as a light smirk appeared on her lips. “Oh stop that, Twilight. Before anything else is even said, you’re both grown adults. It’s not my place to do more than offer advice to either of you anymore. Do what you want with your lives. Besides, your father owes me 100 bits for thinking you two were banging for years. I know my foals better than he does. I knew this had to be fairly a recent development sometime in the last year. I’ll gloat at him later.”

There was another period of utter silence as both siblings stared at their mother in confused disbelief, a single word escaping them.

“...what?”

An amused chuckle escaped Velvet’s mouth as she looked at them. “I can only guess at how much of a mess is under those blankets. Judging by the smell, you two were definitely enjoying a long night. I remember how it was to be young and full of energy, among other things…” She let out a wistful sigh. “So how serious are you about each other? Does Cadence know?”

Velvet didn’t mention that Cadence had actually given her some advanced warning a few months ago. The pink Princess had been on a proverbial warpath when she’d approached herself and Night Light about their foals being in love. Fortunately for all involved, Cadence’s gambit to shield the pair even from their own parents was unneeded. They were shocked of course, but they loved their foals unconditionally and had no real problem with it. Cadence was quite thrilled, and very relieved, that there wouldn’t be any conflicts on their end. She’d almost been ready to outright attack herself and Night, which made Velvet very amused. If Cadence loved their foals that much, she was quite confident about another bet she made with her husband about something likely to happen later. Night didn’t believe it would ever happen.

Unlike him, Velvet knew how to read other ponies very, very well.

And that included Cadence, kinky Princess that she was. They had great chats.

Focusing back on the situation, she watched her foals trading a look before Shining spoke up.

“Uh… Cadence knows. And, well, Twilight and I are very serious. Enough that we’re going to try and build a life together long term. We don’t have everything figured out yet.”

Velvet gave an understanding nod. “It’s a lot to sort out. How about you, Twilight? Are you serious about this?”

Twilight swallowed, still on a sexual edge that seemed to hang just at the edge of a climax. Her marehood still fluttering along Shining’s length and swelled flare that felt on the verge of finishing the job. It was a maddening experience to find herself in. Unable to calm and not quite able to cross the finish line. It was an edging from Tartarus and she did not want to orgasm on her brother’s cock in front of her mother. The mix of sensations and emotions kept her squirming against Shining, unable to decide whether to try and slip him out or make him give her one good thrust to make it stop.

“A-as serious as I am about learning magic. I know I want Shining to give me a foal someday. Once we’re ready to start a family. I know there’s a lot to prepare for. We’re being very careful about all of this.”

That made Velvet’s smile grow wide as her eyes danced. “Oh you better believe you’re giving me grandfoals! And since you’ve got two mares involved in all this, I expect double. You hear me, Shining? I want two grandfoals each from Cadence and your sister. I want some babies to spoil!”

Shining blinked hard at that.

There was acceptance, and then there was their mother.

Deciding to suffer the indignity of his mother watch him pull out of his sister so he could stop the distraction of a near climax, Shining began to extract himself in a slow movement. “Mom, did you really have to tell us that right now?”

Just as the siblings felt Shining’s length pull back to the tip, their hearts skipped a beat when he suddenly thrust back inside to the hilt. Unprepared for it and on edge as they were, Shining sailed right over the edge as he began to spray his seed into Twilight as he cried out. As she felt her brother burst inside her, Twilight threw her head back and gasped as she clamped down on him. Feeling him firing his load through her cervix to join everything else he’d left inside her had her shuddering through the pent-up climax she shared with her brother.

Both of them were panting when it ended, staring at each other in weary shock as they tried to get their heads around what had just happened. The renewed massive blushes on both their faces told the other enough about personal feelings of experiencing a huge orgasm in front of their mother.

Turning their heads, they were further mortified to find Velvet’s horn glowing just long enough for them to notice.

Velvet wore a supremely smug, knowing expression on her face. “Really, trying to pull out when your mare is ready to peak. Shining Francis Armor, I raised you to take care of the mare you’re with. That includes during sex. A mare can’t get that close to orgasm and stop like that or she’ll just be irritable all day. And I do not want to put up with your sister’s potential attitude just because you didn’t make her finish. I’d think Cadence would’ve ingrained that into you by now. Guess I’ll have to talk to her about your sexual skills next time she drops by for tea.”

Neither Shining nor Twilight could do more than gawk at her, eyes wide and mouths hanging open. They didn’t even know how to begin to process what had just happened.

Turning towards the door and starting to make a casual exit, Velvet stopped before she left and looked back at the two ponies on the bed. “By the way, your father knows, too. Don’t worry about him. The only reason he wasn’t with me is because we thought it might be too much for you to deal with all at once. Join us for breakfast once you’re ready. I’m going to get some pancakes going in an hour. While you’ll sometimes have to face some serious challenges due to being related, I’m happy for you two. Love as deep as yours is a very special thing.”

Shining and Twilight just kept staring at the door after their mother closed it behind herself. For over a minute, they could do nothing but stare at the door or each other.

It was Twilight that found her voice first as she caught her brother’s face with her hooves. “You know what? Buck this. Buck that. Buck everything. Obviously, Mom has once again confirmed she’s completely insane. Shiny, they already know what we’re doing. I have no idea how to respond to this, so I am just going to settle on some really weird sex. Hopefully after you give me another orgasm or two, the world will make more sense. Sound good?”

“I…” Shining tried to make the gears in his head stop grinding together but failed as he stared back at his sister beneath him. “You know what? Sounds good. Not like this morning can possibly get any worse.”

Velvet took a sip of her coffee after the pancakes were ready. As she’d cooked, she told her husband what happened after he’d headed downstairs to start the coffee, leaving her to deal with their foals’ indiscretions. Night had laughed a great deal by the time she was done.

Night Light chuckled. “Still can’t believe I lost that bet. Makes me want to rethink the other ones we’ve made. All these years and you’re still such a pervert, honey. I suppose you’ll be wanting some action later, once the kids head off. Blind bondage this time?”

Flashing him a winning smile, an ear twitching at a familiar sound elsewhere in the house, Velvet cooed, “You know me so well, Nighty. Enough on the special topics though. They’re on the way now. Her room might have been silenced, but she forgot to hit that old door hinge and its quiet squeak. Since just about an hour after we went to bed and Shining joined her, that door’s been shut until we found them. Obvious all nighter from the scent.”

“Still amazes me how attentive you are with anything to do with sex,” Night commented, taking a drink of his own coffee as he turned to his morning paper. He was long since used to his wife’s rampant love of sex and sexuality being a constant thing when in private with him. He found her acting skills to hide it almost everywhere else to be hilarious because he knew the truth about her. Only one other pony really knew, but she’d never tell a soul. The in-joke innuendo they often shared around other ponies never got old to them.

The sound of two sets of hooves nearing the dining area were followed by their foals entering the room.

Velvet froze when her eyes landed on her daughter. She didn’t actually forget to…

If one had compared the devious grin on her face from the earlier discussion, it paled before the one she now wore. Glancing at her husband and catching his eye, she knew he’d caught on as well. A subtle look was all she needed to communicate her thoughts. Are we taking advantage of this?

Night Light’s answering look was subtle and sly as he smirked back. Definitely.

With a moment to decide how to start, she made a beeline towards her daughter as she let out a squeal of delight. “Oh my goodness, Twilight! Why didn’t you tell me last night! This is so exciting!”

Twilight was confused for all of a second.

Then, with her mother’s hoof rubbing the side of her swollen belly, she realized the most horrifying part of the morning had just started as her limbs locked up. She heard a faint rushing in her ears as she blushed harder than she ever had in her life. It was somehow even worse than having her mother making her brother and herself orgasm by proxy. Or something. She still didn’t know how to deal with that yet.

To her great horror, Twilight realized that she had forgotten and headed to breakfast with their parents while still visibly bloated with her brother’s semen. And she looked a few months pregnant because of it. Oh Celestia, please just kill me now…

“Oh my goodness! You must be at least three months along already! You must have been hiding your belly with an illusion last night! I hope you’ve gone to the doctor already to make sure everything is flowing smooth in there! Oh, I’m gonna be a grandmother in a matter of months! I’m just full to bursting with excitement!” Velvet continued to gush as she rubbed her daughter’s semen-bloated belly while putting on the act. She knew what she was doing because of how weak Shining’s scent was in the bedroom compared to his sister’s. It had to go somewhere, after all.

Night Light strolled up next to Shing and tossed a foreleg over his shoulders with a broad smile. “Congratulations, son! Your sister really wears that look well. Was it a lot of work to put that in there? You’re gonna be a dad soon!”

Shining Armor’s brain ground to a halt. His face was white under normal circumstances. By this point, he had gone full tomato as he stuttered. He could only process the knowledge of what exactly it was they were gushing over. And his part in causing it. “I-I-I… Um, th-that is…”

Twilight didn’t know what to do as she scoured her brain for answers and found only empty thought cabinets. The first thing that came to mind won by pure lack of options.

“I-I have to pee!” she declared. Then she wheeled around and dashed out of the room like her tail was on fire, blushing down to her shoulders.

As Shining saw his mother turn her focus on him with a still terrible grin, his father offered a small suggestion.

“It’s always a good idea to make sure your mare is alright when she’s pregnant or stressed. But if you wanted to stay here with…” Night Light watched his son scramble after his sister with a vague ‘goTwilycheckbye!’ for parting words.

Velvet’s eyes glinted with mischief as she turned to her husband, putting up a simple sound bubble around the dining room as they spoke in unison. “Worth it.”

A second later, both of them were laughing themselves to tears as they leaned against each other.

Once they’d managed to calm back down, the sound bubble was removed.

Velvet wiped the tears from her eyes with a light gray fetlock as she caught her breath. “Oh my. We haven’t gotten in that good a round of trolling in years, have we, Nighty?”

Night chuckled and shook his head as they sat back down at the table. “That we haven’t, honey. Think the family curse is fulfilled?”

Taking a sip of her coffee again, Velvet hummed with a relieved smile. “Most likely. I think I can finally tell Twilight about how mares in our family always end up doing something incredibly perverted around her age. All things considered, she’s landed a wonderful approach where it probably won’t be a curse for her. Ending up in porn for over five years, let alone a mare of the night like most before me, had it’s dark side. I managed to escape most of the worst parts, but not all of them.” Velvet let herself feel a small shudder before putting the memories away again. “And her brother will keep her safe if she didn’t do enough yet, so we can take comfort in that at least.”

“That he most certainly will,” Night replied in his own relief. “Always had some worry she’d try to approach me when it finally happened. I wasn’t looking forward to having to find a way out of that scenario. Still, are we going keep teasing them much longer? If you think you should tell her, then maybe today is a good time. Shining is even here with her to offer support. They still have a couple hours before they even need to think about leaving.”

Closing her eyes for several seconds as she thought about it, Velvet soon shook her head. “I need to think it through first. Also want to give it some time, just in case things do go sideways on her. Heck, I might even need to involve Cadence if my guess is right.”

“Up to you, honey,” Night acknowledged before changing topics. “Still can’t believe Tia was willing to make your porn record vanish for such a low price after Twilight took the entrance exam and gained her apprenticeship.”

Velvet snickered as the memory played across her mind. She had long enjoyed the public reputation of a devoted mother and published author with multiple popular fiction books to her name. And not as any kind of porn star. “I still remember how she said it, too. ‘As a connoisseur of pranking, I have an interest in learning any new variations or techniques I see from others.’ Who knew Princess Celestia herself was such a huge fan of trolling. Certainly explains some of the famous lines in some her speeches over her long reign. Twilight better hope she doesn’t let herself become a target by pranking her first.”

“You know, honey, this does make me want to consider talking to Tia again. The foals are out of the house nowadays and we know she’s often lonely,” Night said before sipping his coffee again.

“Ah, yes,” Velvet replied, a fond look crossing her gently aged features. “Well, it’s still a standing option to me, Nighty. You know I’d happily go back to her in a heartbeat. We couldn’t keep up like we used to, but if she’s not found somepony since us, it’d be nice to keep her company from time to time again. It amazes me to this day that the three of us actually did things as wild as shrinking and unbirthing when I was in estrus. Followed by you and I having sex in Tia’s womb as she masturbated to us wiggling around inside her. I don’t know which of us came hardest from that. I also still swear that was how Shining was conceived. If ponies only knew what she’s like in bed…”

From elsewhere in the house, alongside the faint sound of a shower, came a soft dull thumping sound that caused both Velvet and Night to perk up their ears. Both began to smile with coming mischief again. A certain pair of ponies forgot a silencing spell.

“We going to tease them over this one, too?”

“Of course we are. Maybe we can start with something like ‘kinda hard to drain the tub when you keep plugging the pipe!’”

The two older ponies struggled to contain their laughter as they planned how to mess with their foals even more than they already had.