[M4F] Rebellious step-sister returns

(I can write 3rd or 1st person but just happen to have started this in 3rd)

"Oh my god, you're home, I thought mom would never let you back in the house" Mark is smiling from ear to ear as his sister lets him fold her into a hug. Her body fitting snugly against his as they press together. "I missed you" he murmurs, aware that their hug is lasting slightly longer than it should. Eventually they pull back.

Mark's big sister was also getting herself into trouble, and usually him too. She had a wicked grin whenever she was going to propose something they shouldn't. The kind which Mark couldn't say no to. They'd stolen alcohol from their uncle when they were young. Getting slightly tipsy in the living room, eventually falling asleep on top of each other.

But it was last year, when he'd been home from college, that things had really taken a turn. She had been wild, drinking most nights, probably doing worse. And something was different between them too. She'd have this smile on her face when she asked him to do things. He'd find her hand lingering on his ass they talked. Her moving closer, especially when she was drunk. Her ass swaying when she left the room. And Mark knew he shouldn't, it was wrong, forbidden. But something about her made his cock ache. He wondered what it would be like inside her, to lift her up like a ragdoll and throw her onto the counter.

Anyway, she'd been kicked out. Mark had gone back to college. And here he was, home for the summer and the house was empty, except for his big sister. He stepped away, looking down at her. She was just as slim as he remembered. Her skin soft looking, inviting. "How are you?" Mark found himself saying, reaching for her hand

As for kinks: rough sex, dirty talk, Sneaky sex, Betrayal, scratching, biting, Dom/sub,sloppy blowjobs, affection ,Sexual tension, kissing, risk of getting caught, hold The moan, raceplay (gentle) probably more, just ask. )