She wants you

Mira gets a hungry look in her eyes, and a mischievous smile stretches on her face.

"I think we can come to some sort of agreement," she says, walking into the room, closing the door behind her.

She takes a step towards you, showing you how much taller than you she was.

"Wh—what are you doing?" you ask backing up until you bump into the wall. "What kind of agreement?"

"I don't say anything about...this," Mira starts, advancing on you and placing a hand on your shoulder, "and you don't mention anything about this," she continues. Suddenly, with one hand, she pulls at your shoulder, then, as you spin, she pushes you into the wall, face first, the other hand quickly pulling down the yoga pants and thing you were wearing.

Mira slapped your ass then slid her hand between your legs, and then slipping one finger into your pussy.

Hands up against the wall, you gasp and moan when Mira enters you.

"You—you're my sister," you protest weakly.

"Stepsister," Mira whispers in your ear before gently biting your earlobe. "And you're my sexy plaything." She slips a second finger into you. "I'm going to make good use of the body you cooked up, 'Leah'," Mira adds, curling her fingers inside you and pressing against your clit with her thumb

"Oh god," you moan, having someone else touch you was so much better.

Your face was burning, part from embarrassment, part from arousal.

"And if I— if I—"

You moan again, interrupting yourself.

Mira stepped back and grabbed her phone, unlocking then fiddling with it.

"Hey, wait, what're you doing?" you turn around. "Stop! I'll cooperate!"

"So I don't need to send this picture to our parents and tell them what you did?"