Author's Notes:

Brief, mild watersports after asterisks break.

With Discord's defeat, Ponyville, and all of Equestria returned to normal. Twilight Sparkle was confident that Princess Celestia would be able to tell right away that the threat had been eliminated.

Only too well.

Celestia wept into her pillow and beat her hooves against the mattress.

"No! We were so close!" she cried.

"Speak for yourself," Luna said, still laying on top of her.

"Get off," Celestia growled.

"We did get off," Luna said with a coy smirk. Celestia elbowed her sister in the ribs and forced her to roll off of her. Celestia rolled over, herself. Her hooves rubbed her belly, where her foal would have been. Where it could have been. She felt a great emptiness. Not just from the absence of Luna's temporary penis. But an emotional hopelessness. To have been so close to her goal just to have the ground fall out from under her hooves so abruptly. Luna brushed herself off and crawled out of Celestia's bed, checking her appearance in the vanity mirror. She looked at Celestia's reflection, laying there on the bed behind her in sullen defeat.

"Do you ever wonder, dear sister, if it is simply not your fate to have a foal?" Luna asked.

"I do not believe in fate," Celestia replied. "I don't like the idea of not being in control of my life." Luna turned to face her once again.

"Yet you seem to be quite fond of controlling the lives of others," Luna said.

"I don't enjoy it," Celestia replied. "Not really." Luna searched her face. Whether it was true or not, her sister was being sincere. But it may have been that after all these years she had deluded herself to the point of believing her own fabrications.

"We want to believe you," Luna said, leaving it at that as she looked out the window. "Though, if that is true..." she continued, "What of Princess Cadenza?"

"What of her?"

"Is she not the result of your 'big plan'? Brought about by your control of ponies? What of her parents? You have not told even me of their identity. But surely they must know who they are. Unless... you've had them eliminated." Celestia blanched.

"How can you even suggest such a thing of me!? I would never! My little ponies have always had a choice in their participation in the plan. I never forced anypony to do anything."

"Except each other," Luna added.

"No. I may have played matchmaker and put the right ponies in the right places. But in the end, they choose each other," Celestia defended.

"So what of Cadenza?" Luna asked again. "Because it seems that she has elected to choose somepony that you did not intend. No duke or prince for the princess. She loves her guard, the Captain. And he truly loves her as well. They wish to wed, and we will not sit idly by and let you come between them! No reassignment of him to some remote post. You will allow this union, sister." Luna looked her in the eyes intensely. Celestia looked away first in deference.

"Yes, you're right, Luna," she said. "I should just let it be. And... I will. If you make an appearance for Nightmare Night this year."

"Sister..."

"Please Luna? I just want ponies to stop being afraid of you. You could use a little positive P.R. It's a holiday for you, after all."

"It's a holiday for Nightmare Moon," Luna grumbled.

"Well, maybe you can change that," Celestia suggested. Luna nodded in agreement.

"Fine," Luna agreed. It was once again mid-day. And Luna was now exceptionally tired. "We imagine you have some celebration ceremony to see to for your prized pupil and her friends' defeat of Discord." Luna yawned. "You will have to forgive our absence."

"Of course," Celestia said, sitting up in her bed. She took a deep breath and pushed her troubles away. Duty called. And it was never Celestia to be one to refuse to answer. Luna turned to leave. "Luna, I love you."

"We love you as well, sister," Luna said with a sigh. "By the stars, we hate ourselves for it. But we do." Celestia frowned, failing to keep it from showing. It should hardly have come as a surprise to Celestia, after all. Luna walked over to where Celestia was sitting. In that moment, her older sister did not look like a princess. She just looked sad, and hurt. Luna put her hoof on Celestia's. Celestia held it both of hers.

"We don't get to choose who we fall in love with," Celestia said. She echoed the same words that she had said to her over a thousand years ago when they first admitted their feelings for each other.

"No. We don't," Luna replied, looking into her sister's sad eyes. "And we mustn't choose it for others." Celestia nodded.

"Sleep well." Celestia lifted her chin up to Luna by a subtle degree. It was an invitation. Luna leaned down and kissed her. It wasn't a passionate kiss of lust. But more than a chaste kiss goodbye of family. After a long moment, Luna pulled away and vanished in a flash of blue light, returning to her own room.

As soon as Luna left, Celestia could not keep the grin from her face any longer, letting Luna 'convince' her to allow the union between Shining and Cadance.

She sat alone in her room for a minute, becoming acutely aware of how much it stank of sex. She set to work making her bed with fresh linen and incinerating the evidence of the old. A couple of open windows and scented candles later and one would never know what had transpired earlier. But for the sticky dampness remaining between her alabaster thighs. Celestia stepped into her shower and washed herself quickly and efficiently. One dehumidifying heat spell later, and her ethereal mane took to the air once again.

She took a deep breath and put on her stoic facade once again. She walked to the door of her chambers and stepped into the hallway to address her guards.

"Send a moving team to Ponyville to retrieve a large stone draconequus statue. The point of contact there will be Twilight Sparkle," Celestia began in a steady monotone. "And have the throne room prepped for an honoring ceremony. Put out an open invitation to the Canterlot citizens for standing-room capacity attendance. Also, send some pegasus taxis to Ponyville to pick up six ponies and a baby dragon. The P.O.C. again, is Twilight."

"Will there be anything else, Your Majesty?" one of the guards asked. Celestia rubbed her forehead in thought.

"Yes, um, have the stained-glass artisan sent to me as soon as possible. I have an urgent commission for them to do."

Twilight Sparkle and her friends accompanied the return of Discord's stone form back to the Canterlot Castle Garden, staying at the castle for the night. The following day they went to the ceremony in the throne room.

"We are gathered here today to once again honor the heroism of these six friends, who stood up to the villain, Discord and saved Equestria from eternal chaos!" Celestia announced to the assembly in the throne room for Twilight and her friends. Everypony cheered as Celestia revealed the new stained-glass window, depicting the defeat of Discord. Her artisan had worked through the night to have it ready in time for the ceremony. Twilight looked out over the crowd. Even in all the excitement, her eyes sought out a particular white stallion among them. She did not find him. The absence of both him and her parents made the event a bittersweet one.

Pomp and circumstance and a few medals later, and the assembly dispersed. Twilight and her friends stayed behind for the after-party. Much like after the Gala, it was just their small gathering with Celestia and some dessert pastries. The friends recounted their experiences for the Princess and after a time, the conversation moved on to other topics. Celestia removed herself from the group. She stood with her glass of wine in her magic, looking up at the new stained glass window. It was next to the one depicting the first defeat of Discord, by Luna and herself.

Things had changed, Celestia thought to herself. The world had changed. It was still changing. And she knew in her bones, the biggest changes were yet to come. She sipped her wine.

"Princess," Twilight greeted, taking the opportunity to speak with her trusted mentor away from the others. Celestia turned to her with the same warm smile she always wore for her dearest student.

"As you tell it, it was fortunate that you were able to see the lesson in all those returned letters," Celestia said, keeping the embarrassing blush from her cheeks recalling the manner of their return. "And fortunate that you have been sending those to me every week."

"It is," Twilight agreed. "It's fortunate that you told me to do that."

"Fortunate that you listened."

"Of course!" Twilight said, nuzzling against Celestia's shoulder. "I would never disobey you." Celestia smiled and leaned down to nuzzle her cheek against Twilight's.

"Yes, I know," Celestia said. "My most faithful student." She looked at Twilight's frown. "Twilight? What is it?"

"Well, I was just hoping that my brother would have been in attendance today. I know my parents were out of town on one of their travels. But since he's in the Royal Guard, I just thought that..."

"I understand. I'm afraid that most of the Royal Guard has been tasked with the recovery efforts after Discord was defeated. His magic might have been undone, but he still managed to cause quite a stir in his wake. It's hard for ponies to just ignore that the sun and moon were zipping about a sky full of cotton-candy clouds and chocolate rain."

"I guess." Twilight frowned. Celestia lifted Twilight's chin with her hoof.

"Your brother is actually on a very important assignment, doing his duty to Equestria, as we all must."

"Do it!" Cadance moaned. "Do it harder!"

Shining Armor gripped her hips with his hooves as he rutted her as fast and as hard as he could.

"Oh! It feels so good to have this back!" he said, grateful to be back in his own body, once again wielding a penis.

"C- cumming again!" Cadance cried out, having lost count of her multiple orgasms. She was likewise pleased to be a mare once more. Not that they hadn't enjoyed the previous day with their little vacation into how the other half lived.

~~~

Even after having sex with their minds swapped into each other's body, Cadance was far from having her curiosity satisfied. She laughed maniacally as she jumped on the bed, making her penis flop about under her.

"It feels so funny!" she said. "Wait wait! Let me try something!" She reared up and gyrated her hips, getting it to swing around in a continuous circle. "Hahaha! It's like a windmill!"

From the bed, Shining just rolled his eyes as Cadance went on her joyride in his body. In the meantime, Shining was spending his time with his rental vagina playing 'will it fit?' with literally anything he could get his hooves on. He found that it had less to do with how long something was, and more to do with how thick it was. Texture played a part too. Perfectly smooth things were perfectly boring. Cadance owned no shortage of toys. But mostly, he found that putting things inside the 'doorway' was not nearly as pleasurable as playing with the 'doorbell'. It quickly became clear why nearly all of her toys vibrated. His pink fur was soon matted with his sticky marecum.

"Wow. You need a shower," Cadance said, looking at the state he had her body in. "I don't want to be getting that back like that."

"Alright, alright," Shining groaned, shuffling his way to the bathroom. He turned on the water and stepped into the shower. He took hold of the shower head and ran the warm water all over his body to rinse his fur before it dried as a sticky mess. He aimed the stream under his tail and trembled. He looked at the shower head and realized at last why she had one with a massaging-pulse setting. He looked to the doorway before adjusting the setting. The warm water began shooting out in a pulsating jet. He aimed it under his tail again and felt his legs turn to jelly. He came at once, and again and again in rapid succession. His grip on it wavered and his aim drifted upwards. The powerful jet sent spurts of warm water into his vagina. "Whoaoahoo!" Shining cried out, dropping the shower head.

Water shot upwards towards the tile ceiling and he quickly turn off the flow. He looked at the shower head behind him, intent on exploring this new discovery. He reached down and disconnected the shower head from the rubber hose. He turned the water back on and watched it come out the hose in a strong, warm stream. He brought it back under his tail, feeling it flowing against his pussy again. Without the nozzle, it didn't have the force to stimulate his clit enough, or manage to get any to go inside. He brought it closer to his entrance until at last, he pushed the end inside.

Warm water flooded his tunnel, filling it quickly and then spurting back out around the hose. It was a new and strange sensation, but very pleasurable. He worked the hose deeper inside, thrusting it in and out like her other dildos as water spurted out behind him. Cadance opened the bathroom door.

"Hey, I'm gonna see how far away from the toilet I can stand while I-" Cadance was cut off as she looked over as Shining, bent over in the shower with the water hose plunging in and out. He looked up at her in shock.

"Cadie!?"

"Well I can't say I've ever thought of doing that," she said. "But it does give me an idea." She climbed into the shower behind him. He tried to pull the hose out. "No, no, leave it in there," Cadance said, bring the tip of her penis to his vagina, stuffing it inside along with the hose, pushing against the flow of water.

"Oof!" Shining grunted as he was plugged up, feeling the pressure building inside. But the water managed to find a way out around her shaft as she pushed in deeper.

"Wow! It feels like you're cumming around me, constantly spurting marecum!" Cadance said as she started to thrust in earnest. Each time she pulled back, his pussy filled with water. Each time she pushed it, it forced its way out around her in rhythmic gushes. Her thrusting pulled the hose loose to fall onto the tub floor. Cadance just held herself there, panting on top of him. With his last ounce of strength, Shining reached up and turned off the water. Cadance missed the warmth flowing out around her. But she felt another pang of 'inspiration'. Shining felt a new warmth spreading inside him.

"Wow, cumming already?" he asked.

"That's not cum," she said, as he felt it running out and down the inside of his thighs. The yellow hue running toward the drain.

"Cadie!" he yelped in surprise.

A wave of magic passed by them with Discord's defeat. Shining now found himself on top of Cadance, back in his own body. He was still inside her, and he was still going, unable to stop the flow once it had started.

"Ohhohhh!" Cadance moaned, now feeling the sensation from the mare perspective. Still in the mindset of relieving herself, she could not stop what came next. Shining felt a more directed stream against his balls and she joined in his release.

"Cadie!" he yelped, in his own deeper voice now, as she stained his snow-white fur. He tried to get away, but she backed up with him, pinning him against the tile wall, intent on holding him there until they were both finished.

"Mmm," she moaned, in relief, at last letting him pull himself free. She looked at his fur, now that she had marked him. She connected the shower head to the hose again. "Okay, now we both definitely need a shower."

Another shower and a good night's sleep later, and they spent the better part of the next day celebrating the defeat of Discord in their own way in Cadance's villa.

"You're up early. Dusk isn't for another half-hour," Celestia said, offering a cup of coffee to her approaching sister. Luna shrugged and accepted the mug and sat with her on the balcony of Celestia's tower. It had been a week since Discord's defeat. The ponies' memories of the event were all that remained. All other evidence had been erased, save for the new pose of the draconequus statue in the garden below.

"We were just eager to see you," Luna said, with equal parts sincerity and sarcasm. It was a fine line that she tread with ease. Luna would be the first to admit that it was likely Echo's abrasive personality rubbing off on her for a large part of it.

"Well I actually was eager to see you as well," Celestia said, retrieving an oblong box from under her seat. "I managed to... procure something for you that I think you might enjoy." Celestia slid it across the table to her sister. It was a rather plain box, wrapped with a decorative red ribbon. Luna tugged as the ends of the ribbon and undid the bow. She lifted the cover and looked inside. It was a large, rubber stallion phallus, the same shade of blue as Luna's fur, and likewise mottled with black. It was attached to a harness with straps and buckles. It's purpose was overbearingly obvious. Luna placed the cover back on the box.

"It's nice," she said in a neutral tone, sipping her coffee. Her eyes looked over her cup to her sister on the far side of the table. She set the cup down and licked her lips. "Is it your intention that we wear that for you?" she asked.

"If you want," Celestia answered.

"So when you say that you got us something that you thought we might enjoy..."

"You seemed to enjoy the role," Celestia said.

"We did," Luna replied, unable to keep the smirk from her face. "So what do you intend? That we take thee into thine bedchambers and rut this very moment?"

"You tell me, Big Sister," Celestia said. Luna's smirk stretched into a full smile. Celestia turned to walk inside. "Or should I say, Big Brother?" Luna picked up the box and followed her inside, closing the door and drawing the curtains while Celestia cast a soundproofing spell. Luna opened the box again and adjusted the straps of the harness before stepping into it. Celestia chuckled as Luna struggled with the apparatus, and ended up wearing it backwards. The dildo stuck out behind her like a second tail.

"Sister! We require some assistance!" Luna said. Celestia walked over and undid the straps and readjusted it into the correct orientation so that the dildo stuck out under Luna's belly.

"Mmm, you made a fine male," Celestia said, recalling that day as she reached around Luna's body to stroke the shaft. She moved back behind Luna and brought her nose under her tail, giving her pussy a few playful licks, thoroughly enjoying the flavor. "But even if you can't give me a foal, I'm glad that you are my sister," she said before pulling the harness up the rest of the way and buckling it into place. "Done."

"On the bed, whorse!" Luna barked.

"Ooh hoo-hoo, yes sister!" Celestia squealed.

"We are not your sister now! We will enjoy this! See to it that you do not, or else you will be punished! Do you understand?" Luna said, threatening Celestia's tight pucker with the thick dildo.

"Yes, Big brother," Celestia said. Luna slid the tip lower to Celestia's pussy, poised to penetrate her. A scroll appeared in front of Celestia with a bright flash of magic.

"Ugh! By the stars, what now!?" Luna groaned. Celestia quickly unrolled the scroll and read it.

"It's from Spike," she said as she read it. "Apparently Twilight has had some kind of mental breakdown regarding sending friendship reports every week. I need to go to Ponyville immediately," she groaned in frustration. Celestia got up off the bed and stomped out to the balcony. She focused her magic to lower the sun. "Raise the moon. I will be right back," she said, eyeing Luna's dildo. "And I will be expecting some male." Celestia vanished in a flash of magic.

"And we shall deliver," Luna said to herself, walking toward the doorway to raise the moon.

Despite her initial sour mood of being pulled away from a session of carnal bliss with her sister, Celestia made quick work of assuaging her student's worries about her letter-sending schedule. She returned to her tower in Canterlot to find that her bed chambers were empty.

"Luna?" Celestia said into the empty room as she walked in. "Luna!?" As soon as she was inside, Luna dropped down from her hiding place up in the ceiling rafters, pouncing on Celestia and pinning her to the floor.

"Surprise, little sister!" Luna growled. "You big brother has something to give you, whether you want it or not!" Luna said, leading Celestia into the role as she rubbed the strap-on against her backside.

"N-no! Big brother! Please don't!" Celestia whimpered, making herself sound small and weak. She could feel Luna shudder in pleasure on top of her at the words. Luna brought the tip back, under Celestia's tail and pressed it to her pussy. "Big brother! Please don't rape me!" Celestia cried. She could actually hear Luna's lips peel back in a smile before she pushed her hips forward, getting the tip inside.

"Ah, it's in!" Luna said in satisfied triumph, pushing it deeper inside.

"No, please take it out!" Celestia feigned. "Whatever you do, don't keep fucking me! You'll make your little sister cum!" Luna grabbed Celestia's mane and pulled her head back. She leaned down and bit the back of her neck. Not enough to leave a mark, but enough to elicit a genuine yelp from her. Luna shoved her hips forward the rest of the way.

Celestia saw stars in her eyes when Luna struck her cervix with the strap-on, realizing that she had overestimated the dimensions when she ordered it. Luna found herself unable to hilt, but was determined to try.

"Ow. Ow! OW! Luna stop!" Celestia shouted. "Luna, STOP! BANANA!" Celestia invoked their safe-word. Luna stopped immediately and pulled out.

"What is it? What's wrong?" she asked. Celestia rolled over and sat up, clutching her stomach.

"I think I ordered it to be too big," Celestia groaned.

"A dick too big for you to take? We never thought we'd see the day," Luna joked.

"Ha, ha," Celestia deadpanned as she climbed onto the bed. "I just can't be hunched over like that." She laid back on the bed, stretched out. "Try it this way," she suggested. Luna moved to the edge of the bed and put the tip back into her, this time with clinical efficiency. She carefully slid more and more in until their hips met. Celestia's womb was spared the impact. "Okay, this is fine," she said.

"Yes?"

"Yes. Fuck me. Fuck me big brother!" Celestia moaned. Luna was happy to oblige her.

~~~

"Fuck me big brother," Twilight moaned quietly into her pillow as her hoof moved in a blur on her pussy, indulging in her own fantasy back in Ponyville. Her friends had all left and Spike was sound asleep downstairs. Her pussy winked against her hoof as she came, wetting it with her marecum. "Oh Shiny... I miss you."

"Shining?" Cadance called out, searching for the stallion in her villa the following day. "Where are you?"

"Just a second," Shining replied from elsewhere in the house. "I'm almost done."

"Almost done what?" she asked in suspicion, heading upstairs to the direction of his voice.

"You'll see!" he said. A moment later he walked out of her office. "What do you think?" Candace just looked at him. He had a crown made out of cardboard and yellow construction paper with a matching collar, and a pair of cardboard wings strapped to his back with white paper feathers.

"What...?"

"I'm Princess Celestia," he said.

"You've lost your mind," Cadance said.

"No, I mean for Nightmare Night!" he said. "This is my costume."

"Oh. OH! That's right. That's this weekend!" Cadance realized.

"Yeah. What? Do you not have a costume?" he asked. She shook her head.

"No. I completely forgot. But I'll think of something," she said. "But really? Princess Celestia?"

"Well, it's more like Prince Mo-lestia," he said, leaning over her with a pair of aggressive hooves. Cadance winced uncomfortably at the contact, given his appearance.

"She's my aunt!" Cadance squealed, wriggling out from under him.

"Adopted aunt," Shining corrected.

"Well she's still like a mother to me," Cadance said. "Can't you be something else?"

"But I already did all this work," he whined.

"Fine," Cadance groaned.

A few days later, it was the afternoon of Nightmare Night. After a trip to the cosmetics store, Cadance vanished into the bathroom for the better part of an hour. Shining, meanwhile, was prancing about the living room in his Celestia costume with a yellow balloon with a sun drawn on it. He gave the string an occasional tug, making the balloon rise and fall in the air.

"Sun goes up. Sun goes down. Sun goes up-" he looked at the clock as the actual sun set outside the window. "Cadie, we're going to be late for the party!" he said through the bathroom door.

"Almost done," she said back. A few moments later she walked out into the hallway. "What do you think?" Shining Armor lost his grip on the balloon's string and it floated up to the ceiling as his jaw dropped. Cadance had dyed her fur lavender purple. She dyed her mane and tail violet with a two-tone streak of purple and pink running through it.

"W-wha-what?" Shining stuttered.

"I'm Twilight!" Cadance said, making a small circle to show herself off. Aside from being a bit taller and having her wings, she looked strikingly similar.

"W- why though!?" Shining asked.

"Well you thought that it was so clever to sexualize my aunt, I thought to myself, 'Well two can play at that game'," Cadance said. "Sunshine sunshine, ladybugs awake. Clap your hooves and do a little shake!" Cadance waved her butt at him to an obscene degree.

"Stop that!" Shining snapped.

"Well you wanted to dress up and get frisky with me dressed as my maternal figure. So it was this or Velvet," she said. Shining shuddered at the fresh visual, both real and imagined. He felt like he was going to throw up. Cadance simply did not realize the kind of fire she was playing with.

"Come on B.B.B.F.F, let's go trick or treating!" Cadance said in mocking tone of Twilight's voice. "Do you have a treat for me?" She leaned down, glancing under him. "Ooh, I think you do!" Shining scrambled to cover himself.

"N-no! That has nothing to do with anything!" he said, backing away from her. His tone was far more defensive than he had intended.

"He doth protest too much," Cadance teased.

"It's just you, Cadance," Shining said, for himself more than anything. "It's just you with a dye job." He covered his erection with a pillow. "It's just from you shaking your flank at me. That's all! But we can not go out in public with you looking like that!"

"Oh? Are you telling me what we are, or are not, going to do now?" the princess said to her guard.

"Please don't! It's weird!" he pleaded.

"And you going as my aunt isn't?" she asked.

"That's different. She's a celebrity!" he said.

"And so is Twilight. She's an Element of Harmony. She's saved Equestria twice. I'm actually quite envious of her accomplishments. I mean, yeah, I'm a princess. But that's about it. So yes, I wanted to dress up as my hero. Okay?"

"Really?" he asked, a bit incredulous.

"Yeah. Really," Cadance confirmed. "Although, teaching you an uncomfortable lesson along the way about your own costume choice was just a bonus."

"Okay, fine," Shining said, taking off his wings and other costume parts. "So I guess we're not going to the costume party?"

"No. We can just stay in this year. I never cared for it all that much anyway," she said.

"Can you rinse that dye out now?" he asked. She smiled nervously.

"It's enchanted to last for a whole day," she said. "Sorry. Is it really going to be that much of a prob- oh, wow. Is that the Big part of B.B.B.F.F?" she asked as she inched closer to him. He stepped back and tripped over the ottoman, falling onto his back. Cadance pounced on top of him, pinning him down.

"Cadie!" he said in panic, making his voice crack.

"Ooh, Shiny! What's this?" Cadance said in her mocking Twilight tone as she took his length in his hoof and began to stroke him. Any magical or physical strength he had to push her off of him evaporated at her touch. She continued to play with him. "It's even bigger than I read about in my books!"

"Cadie, stop it!" he pleaded.

"Call me Twilie," Cadance said as she started to lick up along his shaft.

"No, it's weird!" he said.

"Then call me weird tomorrow," Cadance said. "Just call me Twilie tonight. I've never had a brother. Just give this to me this one time," she begged, teasing his tip.

"You are weird!" he said. She stopped and waited.

" 'You are weird'... what?" she prompted, keeping her open mouth just an inch from his tip. Shining winced and clenched his eyes and huffed in frustration.

"... Twilie," he said. Cadance's entire body practically quivered at the word. She proceeded to practically swallow half his length. Shining felt the tense stiffness in his muscles fall limp. The only stiff thing about him was now halfway down her throat. "F-fuck!"

"Hmm?" Cadance hummed with him still filling her mouth. She pulled off of him to catch a breath. "Oh? Like this?" she asked as she moved forward to straddle him. She took a hold of him again and aimed him upward at her waiting pussy. She was quite literally dripping with arousal as she rubbed his tip against her entrance. "Does it go in here?" she asked with faux innocence.

"Yeah!" he said, nodding eagerly. She slowly, painstakingly, tortuously worked just barely the tip inside.

"Yeah... what?" she prompted him again.

"Yeah... Twilie," he said as commanded. She dropped her hips the rest of the way down, taking him completely inside of her.

"Oh, BIG brother!" she said, teasing him in her role playing. Shining grunted. She felt him throb even harder inside her. "Wow, you are really hard!" Cadance said, genuinely impressed. "We should do this more often!"

Shining's eyes watered in anguish. He kept them clenched shut. He hazarded a glance, for just the briefest moment. His vision was blurred, but all he could see was the diffuse colors of his sister bouncing up and down on his cock. He felt like his heart was twisting inside his chest. His hooves gripped anxiously at the rug at either side of him. He grit his teeth as he felt his primal urges overtaking his willpower and conscience.

His hooves moved to her hips and gripped her so tightly that Cadance was sure that she would have bruises the next day. On her next bounce, he moved up with her and flipped her onto her back, pinning her on the floor. He held her to the floor and began fucking her with a bestial ferocity the likes of which she had never before witnessed. She looked up at him and saw the raw hunger in his eyes. For the first time since she'd met him, she felt a genuine flutter of fear. The combination of emotional charge caused her to cum unexpectedly. Her pussy gripped and milked him as he fucked her with only regard for his own climax.

She felt him begin to flare inside her. He pulsed and throbbed. As he began to cum inside her, he growled through his grit teeth like a wild animal.

"TWILIE!"

In Ponyville, Twilight was just finished getting dressed in her 'Starswirl the Bearded' costume for Nightmare Night. Under the heavy material of the hat, her pointy little ears felt like they were burning.