Try the new AI-powered Infinite Story.

Hall of Infinite Doors

You feign a sigh, and sit down on Isaac's bed. He follows you, stopping right in front of you so that he can gloat, as you knew he would. It's a little brother thing.

"Bro, have you ever had a girlfriend?" you ask.

"No," he replies, slightly annoyed.

"Exactly. One day, you will. And you'll understand why I'm going to do what I'm about to do."

"What the hell are you talking about?" he asks, folding his arms.

You take the opportunity to punch him straight in the crotch, using all of Isaac's considerable strength. He blacks out from the pain, falling over with his hands cradling his nuts. Man, Isaac's gonna get screwed for that!

You turn off the lights, close the door, and drag an end table in the hallway to brace the door with. It's not ideal, but at the very least the noise it'll take to burst open the door will give you a heads up.

You leave the front door open, and sit down on the living room couch. Cassy comes in a few minutes later. You've got to hand it to Isaac- he's picked up a hot one. She's probably one of those ditzy bimbos, but with breasts like that, you don't really care. It's not like you're gonna have to deal with her. Well, after you've screwed her, anyway.

Once she sits down, you immediately lunge in for a kiss. She flinches visibly, but once she's over the shock, she lets you into her mouth. You bring your hands around to start undoing her bra strap, while she heads straight to your pants.