Black Butler/ Kuroshitsuji Smut One Shots (X-Reader)

Sebastian x Reader

It was no secret that you and Sebastian were lovers. You were both demons, him a demon of Pride and you a demon of Lust. Different demons for different sins. You were otherwise known as a Succubus. Sucking the life of their victims after intercourse. It was rare for demons to fall in love with one another, but that just made the two of you the exceptions. It was also extremely rare for Succubui to have sex with the same person more then once, but you discovered his essence was all you needed to feed. Whether it was oral or anal. You got the desired amount to survive.

You see, Succubi need one of two things to stay healthy, souls or essence of someone. Only demons of Lust can use the essence, other demons need souls. You discovered that Sebastian was all you needed. He sufficed you with enough for a life time, but that didn't stop the two of you.

Demons have excellent stamina, but when it comes to intercourse, Succubi had no limits. They could do it forever and not get tired. The fluids also don't run out and are constantly being replaced. As well, they don't get pregnant unless they choose to do so, which was a bonus, considering a child would just get in the way.

Did you know that Succubi are dominant? They are never the submissive partner, and they can be quite sadistic. This is true, you're always in charge while in bed and Sebastian had learned that he enjoys being the submissive one. Once it a while, you'll switch positions, especially when he has had a long day or is angry, you let him be in control. That's always so much fun. It also helps that he's a masochist. 

The way his pale skin was glistened in sweat, his crimson eyes glazed over by lust, the way his perfect lips part open and a moan escapes them. The sound of skin slapping on skin, the deep moans, the ragged breaths, and the long groans was like music to your ears.

You guys always did it after your shift, but you teased him all day. Succubi have a special ability to generate hormones in the victims so they couldn't think straight. Their bodies become hot and aroused and all they can think about his having sex with the Succubi. You would constantly do this to Sebastian, making him only think of you throughout the day. He would get so irritated, every time you would walk into the same room, it shot straight to his groin. You're scent infiltrated his nostrils and his body grew hot. He would get sweaty and his vision would get hazy.

He would take you right there if it weren't for you disappearing after a few minutes and all the feelings went away.

Of course, you did that today, about twelve times. Now, it was after both your shifts and you were waiting in yours and Sebastian's shared room. Your boyfriend was just finishing up last minute stuff, tucking Ciel in, cleaning some things, stuff like that. Then he would come in here.

You had hormone enhancing candles lit all over the room, which was normal every time you guys had intercourse. You were wearing lace F/C lingerie, the bottoms thin and exposing while the bra had no straps. Now you were sitting on the bed, the head of a leather whip twirling  between your fingers.

That's when the door flung open, it slamming against the wall. Sebastian stood in the doorway, panting heavily. His tailcoat and vest was lost, his eyes were that demonic fuchsia you loved so much, his raven black hair stuck to his forehead. You smirked at him, standing up.

"You're late, Naughty Boy, punishment time." You told him seductively, tightening the leather whip in your grasp. Your own eyes turned fuchsia. You saw Sebastian shiver at your statement, a smirk on his lips. He then licked his lips. "Then punish me mistress." He whispered huskily and you snapped your fingers. His shirt disappeared in black smoke and you made a turn around motion with your fingers. Sebastian obliged willingly, turning around to face the wall.

You raised the whip, before striking Sebastian with it. When it hit his skin, he let out a low groan, his hands placing themselves on the wall. Blood trickled down from his back, making you lick your lips in anticipation.