Author's Notes:

Contains: [Sleep Sex]
Written by Ragabash

Slowly the door opened, stopping when it creaked shortly, only to fully widen up afterward. Just as slowly, the white mare stepped in, closing the door behind her with her magic.

For several seconds, she just stood there, staring at the bed on one wall of the dark room and the purple unicorn in it, covered by a blue blanket. She wasn't moving, but breathed rather loudly, that it was obvious that she was asleep.

Even though she went that far, Celestia still wasn't entirely sure whether she should do what she planned. She did questionable things before, but for the most part for the greater good, the protection and well-being of her subjects. However, for this, there was no justification. The only reason was her selfish desire.

The older mare went closer to her student, careful not to make much sound. It didn't actually matter much, whether she wakes up. With her magic, Celestia could put her back to sleep and make sure that she doesn't remember anything easily. But she didn't want to do any of that. What she planned was bad enough in the first place.

When she stood on one end of the bed, Twilight's hindlegs facing her, she grabbed the blanket with her magic and pulled it up, exposing her lower body. Since the unicorn was lying on her back, she got a good view at her.

Again, Celestia took in the sight of her student, gazing at the thin slit between her legs and the small bumps above, each topped with a pink teat.

And again, she had doubts about it, as much as she enjoyed seeing her like that. Even if she would never know about it, it wasn't right. However, she couldn't just change her feelings. But she shouldn't completely indulge in them either. She learned the hard way that doing so with her students could cause a lot of trouble.

Only a bit. Only as much as to keep her desire in check. And the less she knew about it, the better.

Moving closer, Celestia sunk her head down to Twilight's crotch. With a slow lick, she brushed her tongue over one of her teats, only to look up to her face afterward. The unicorn didn't react, too deep in her sleep to notice anything. Feeling more daring, the white mare licked the teats again, this time faster and alternating between the two. She enjoyed the feeling of the hard buds against her tongue, every time she moved it over them.

But as much as she wanted to stay at them, she knew that she should make it quick and not stay for too long. So, soon the princess moved down to Twilight's most private place. She took a small sniff, taking in the scent of her student, before she moved in and began to lick her pussy. She didn't want to keep doing this for long, but once started, she found it hard to stop. Again and again, she moved her tongue over the lips and before long it became wet, not just from Celestia's saliva, but also Twilight’s own fluids. Tasting the juices only drove her on more. With her magic, she parted the lips, before she dove down and plunged her tongue deep into her. By now, the unicorn was moaning in her sleep, but that didn't make Celestia stop. Instead, she was licking the insides of her pussy and lapping her juices with pleasure. She barely resisted the urge to touch herself. She knew that she should stop, but it was too into it to do so. Until...

“P-Princess?”

Shocked, Celestia looked up. Twilight was awake, staring at her with a shocked expression, a thick blush on her cheeks.

It was a bad idea, she had been aware of that from the start, but now she knew how just how bad it really was. She overestimated her ability to keep control over herself and went too far.

The worst thing was that she couldn't bring herself to undo it. She could make Twilight forget without a problem, but it would make everything worse. Taking advantage of her student and then pretend like nothing ever happened? The guilt would eat even her up.

And part of her didn't want Twilight to forget. Instead, it wanted to tell her everything, even if that meant to change their relationship possibly for the worse. Even after what she just did to her, which would make everything more awkward than it would be in the first place.

Celestia stood up, looking at her student. “...I'm sorry, Twilight,” she said. “I let go of myself and did... regretful things.”

The princess sighed in her mind. This would be a long night...