In Sweeties' Room

by Titanium Cupcake

She could feel her hot tongue licking her clit, the foals' eager hoof probing deep inside her cunt — and suddenly she exploded into orgasm, cumming on her Sweeties' face.

"Oh god yes! Fuck!" Rarity climaxed loudly, her hoof digging into her sex, wet with her desire.

It was late at night and Rarity was on her bed, enjoying steamy erotic stories that she would get Twilight to secretly import for her.

Rarity sat there a minute longer, panting. her eyes were closed, her hooves still between her legs, the throbbing heat of her orgasm gradually subsiding.

Then Rarity decided to do what Rarity would always do at that point. By now it was not really much of a conscious decision, more an automatic reaction.

Rarity loved reading dirty stories about Mares with female foals, it made her feel younger than she was. Stories about lesbian female incest were among her favorites. They got her so turned on, so crazy with lust, Rarity could hardly stand it. And over the past few months, this obsession had driven her to what Rarity was about to do next.

Rarity had always had an attraction to her sister Sweetie Belle. She tried to hide it with being critical and impatient with her. But the truth was, in her eyes, Sweetie Belle was a vision of perfection, the most beautiful, wonderful and sexiest foal there ever was.

Rarity stood up from the bed, closed the book and went out into the hall, to Sweetie Belles' bedroom.

Carefully and quietly Rarity opened the door, then stepped inside. Rarity waited, letting her eyes adjust to the darkness, listening for the soft sounds of her sisters' breathing, making certain she was asleep.

The first few times, that was where Rarity had stayed, just inside the door. At least Rarity was in the same room with her, and that was enough. Rarity started rubbing her clit until she was close to an orgasm.

Then Rarity had left her room and gone back to her own bed where Rarity finished.

Soon, however, that was not enough. Rarity wanted more. Rarity decided to let herself climax in Sweeties' bedroom, still by the door, with her hoof bringing her to a shuddering orgasm.

After a few evenings of that, Rarity had to go further. Rarity moved deeper inside her sisters' room, nearer to her bed. Rarity wanted to be able to see her pretty face as Rarity pleasured herself.

Then that wasn't enough. By the end of the third week, Rarity was standing right next to Sweeties' bed, very close to her, trying to be as quiet as possible when Rarity came. Rarity told herself that if Sweetie awoke she could make up an excuse for being there that her darling sister would accept.

For a few days, that was enough. Then it wasn't. Then Rarity needed more.

At that point, a few weeks ago, Rarity was still just standing beside her bed. That was good enough for a while. But then Rarity decided to be bolder. Rarity wanted to be even closer to her, to her darling little sister, as Rarity brought herself to orgasm.

One night Rarity lifted a hind leg up onto her mattress, spreading her legs wide, holding her pussy open, exposing herself to the sleeping foal. When Rarity came that way, it was thunderous. It took all her will to keep from screaming, the pleasure was so intense. But somehow Rarity managed. Rarity was able to stay quiet enough that she did not wake up. And that told her it was time to go even further.

A few nights later, Rarity was standing on the bed, straddling Sweeties' pillow, her wet cunt above her face. Rarity knew that if her orgasm was an especially wet one, as they often were, and if Rarity dripped onto her face, it easily could awaken her. It was risky, dangerous, reckless. And goddamn it excited her.

Rarity did it that way for nearly a week. It was almost enough. Rarity almost decided not to press her luck any further. Almost.

Then, just two nights ago, Rarity took it to the next level. Instead of standing above her, Rarity was on her knees, her pussy just a few inches away from her muzzle. From her sisters' beautiful, adorable, darling little face. Rarity was fucking herself right in front of her, so close that if she awoke and wanted to lick her, it would be easy, so easy.

That brought her the biggest orgasm of her life. And yet somehow Rarity was able to keep still enough and quiet enough that Rarity did not wake her. Rarity was very fortunate that Sweetie is such a sound sleeper.

So, tonight, here Rarity is again. In her sisters room, moving to her bed, stealthily climbing onto her mattress, straddling her, spreading her thighs over her face, opening her pussy with her hooves.

Rarity looks down at her crotch. Beads of moisture glimmer in her fur. Rarity can smell her own arousal, and Rarity wonders if she will be able to smell it in the morning. Rarity wants to rub herself on her sweet little sister. Rarity wants to take her face in her hooves and bring her muzzle to her cunt. Rarity wants to come in her mouth.

But no, Rarity would never do that.

Rarity is a good sister. Rarity loves her sister, Rarity really does, and Rarity would never do anything to harm their relationship.

What Rarity is doing now is enough. Rarity dips her hoof into her vagina, feeling the hot slippery wetness at her center, and then Rarity slides the hoof up to her clit, gently massaging it, just... just... right there... just like that... oh god yes... Rarity is so close...

In a few moments Rarity will have an orgasm, a wonderfully powerful, insanely exciting orgasm, almost on top of her little sisters mouth.

And then Rarity will leave her room. It's enough. It's all Rarity will need.

For now.