“Princess Celestia...?” Twilight called out as she slowly trotted into Celestia's study. Celestia herself was standing close to a bookshelf, holding open a book with her magic and scanning its contents. “Your guards said you summoned me here. Is everything...”

“It's alright, Twilight.” Celestia interrupted with a soft voice. She took a slow, deep breath and closed the book, setting it in its proper place in the book shelf. “I felt like I needed to speak with you once more over the events that occurred earlier...”

“It's been two days since it all happened. Is it really true that Luna is responsible for all of it?”

“Only partially, Twilight.” Celestia gently shook her head a couple times before looking over to her pupil with sorrowful eyes. “While it is true that my sister had a hand in releasing such a monstrosity, I still am to blame for even holding in such a thing. As ruler of this land, it is my sworn duty to watch and look over everypony who resides in it, to ensure their safety and well being to the best of my ability. This, is where I had failed two nights ago, as well as a select few times in the past. It is not often, Twilight, that there is an event that causes me to question the legitimacy of my own rule over Equestria. This is one of them...”

“But your highness, your wisdom and knowledge is what has kept Equestria in such a long period of peace and tranquility. You're the best ruler anything has had in over a thousand years! I can sparsely believe that anypony would think negatively of you, even if you may have had a few slip-ups.”

“Oh Twilight...” Celestia sighed with a soft smile, turning and taking a few steps towards her pupil. “You have always spoken highly of me, and even after my terribly deplorable acts, you still hold me in such high standings in your heart. I am... grateful.”

“Not just me princess, but all of my friends as well. After the events of that night, it sort of took a while, but we all came to grasp with the real situation and eventually got over it. I even did some research and discovered that it's not unheard of for a pony to sort of snap in 'that way' after extended periods of time. And being ruler for a thousand years... I can't imagine the strain it would have put on your mind.”

“Yes, but it is not right for me to make an excuse out of it. It is my fault, and therefore I can only pin the blame on myself, regardless of my sister's actions.”

“I understand your highness, but please... don't take it too hard on yourself. We all care about you, and even the strongest of us have our weak points. Promise me you won't take this too hard on yourself?”

“I promise,” Celestia replied with a soft chuckle and a warm smile. “And thank you again my star pupil, for all you've done.”

“It's no problem your highness,” Twilight said happily as she quickly trotted over and nuzzled the side of her muzzle under Celestia. Celestia bowed her head over Twilight's and closed her eyes for a few moments, taking the time to savor the wonderful pupil she has.

“Oh, and Twilight,” Celestia said as she raised up her head. “My sister Luna wishes to speak with you in her study. I told her I would send you over as soon as you had finished talking to me, is that alright?”

“Oh, sure thing princess!” Twilight replied as she took a step back, smiling up at Celestia. “What did she need to see me about?”

“She said it had to do with something to do with an idea she came up with. I don't know exactly, but knowing my sister, she's probably got something pretty entertaining cooked up. It should be pretty fun.”

“Alright, I'll go see her then I guess. Thank you your highness!”

“No, thank you Twilight,” Celestia said with a warm smile which Twilight returned before she left the room, closing the door behind her.

Getting directions from a few guards, Twilight quickly made her way through the halls of the Canterlot Castle, already getting close to Luna's study after a little more than a minute of searching. But as she rounded a hallway, she found Luna walking her direction and almost bumped directly into her.

“Oh, Luna!” Twilight said, her voice half surprised and half joyful. “There you are, the princess said you needed to talk to me.”

“Thank you for your attendance Twilight, and yes, I had something I wished to discuss with you. Come, walk with me.” Luna turned and began walking down the hall in the opposite direction with Twilight right at her side. “Did Tia tell you any of what I wanted to speak to you about?”

“Not really, only that she figured you might have something entertaining in store. I figured you probably had a surprise set up or something.”

“Well...” Luna gave a soft giggle as her cheeks gave a faint blush for only a moment before returning to normal. “Entertaining is a good word, I would say. As for a surprise, well... that depends on your analytic skills I guess.”

“What do you mean princess?”

“Twilight, ever since the events that occurred a couple nights ago, I have began to think... deeply.” Luna made a turn down another hallway, one that doesn't lead to her study, but Twilight didn't notice.

“Think about what exactly? I mean, I know we all went through a lot... and most of us still cringe when we think back to what happened, but what could be bothering you this much?”

“I honestly don't know how to put it, Twilight. But so far the best explanation I can give for all of these thoughts are... an epiphany, perhaps. A realization with great meaning. I don't know for sure, but it has continued gnawing at me on the inside, and I feel as though I just need to get this out there.”

“Get what out where? You're sort of losing me princess...”

“Well, what I'm trying to get at is, I think I need help with something, Twilight.” Luna entered through a large doorway with Twilight instinctively following behind. “Help with a very pressing matter...”

“Well rest assured princess, I'll do whatever it takes to- hey,” Twilight stopped suddenly and looked around, realizing they were in Luna's bedroom. “This isn't your study.”

“You're right...” Luna said in a low tone, her magic closing the door behind them. “It's not.”

“Um... Luna?” Twilight asked as she watched Luna turn around to face her while hearing the locks of the bedroom door click into place. “What was it you needed help with again...?”

“I think I finally understand what exactly Celestia went through in the past thousand years. Of the times she told me she lost control of herself...” Luna began to slowly walk towards Twilight, with Twilight backing her flank against the door. “And of all the lustful cravings she experienced.”

“B-but... But your highness...” Twilight gulped, trying in vain to back up further. “Don't tell me that... you too!?”

“Oh Twilight...” Luna giggled again as she licked Twilight's cheek, trailing her tongue slowly to the edge of her lips before pulling it back. “When Celestia changed at the beginning of that night, she introduced me to a new feeling that I had never felt before.” She pushed the front of her muzzle up against Twilight's, their lips almost connecting. “And now I want to feel it again...”

“N-n-no!” Twilight cried as she pulled back and moved away from Luna. “Princess, you need help! You can't let yourself fall victim to the same urges that Celestia did!”

“And you assume I haven't felt these 'urges' before? What do you think I was going through being on the moon for a thousand years!?”

“Well, I...” Twilight stopped, lowering her head to think for a moment. “I guess I never really thought of that...”

“I've had enough time to think...” Luna said as she looked sternly at Twilight, walking towards her again. “I've made up my mind Twilight Sparkle. Now it's not as much work with the mind that's in order, as there is work with the body.”

“P-princess Luna, please...!” Twilight cried desperately, not realizing she was backing up towards Luna's bed. “You can't do this! This is just, so, so...”

“So Naughty...!” Luna said, finishing Twilight's sentence in her own way.

Twilight's eyes shot open with a gasp as she looked into Luna's face, realizing her irises had dilated and she had a grin that closely resembled Celestia's two nights ago. Before she could do anything, Luna leaped at Twilight and pushed her back onto the bed as her horn lit with magic, sealing the room and making it impossible to open.

Author Note: This will be a separate story which I will link in these comments once I have completed part 1. Hope you all enjoyed Molestia! Are you ready for round 2? ;D

If so, then go here!
http://www.fimfiction.net/story/2562/Lunaughty