Connor shows up

You and Amanda get your coffees. The cashier is male this time and when he takes your order he reaches across the counter to pull on one of your sister's nipples. She flinches but says nothing otherwise. You grit your teeth but the anger running through your veins is, maybe irrationally, directed at her. You spent all that time and worry to prep her for this and here she is fully naked at your school.

You get your coffees and she suggests you guys sit for a minute. You both find a spot with two comfy chairs. Amanda plops down on one immediately but you inspect the other for stains before sitting down yourself. She goes into prospective student mode and asks you some questions about school. Your answers are short at first but as things feel normalized, as normal as they can considering your sister is butt naked in front of you, your answers become more expansive. Eventually it turns into an almost normal conversation.

Then, someone claps you on the shoulder. Connor. Your blood heats up and you owe him for what he did to Eve at the party.

"Yo man what's up? And who is this hot little thing here?" Connor stands next to you but is eyeing up your sister. She looks at Connor doubtfully.

"I'm a person, who is John's sister, and my name is Amanda thank you very much," she says. She sticks her hand out to shake Connor's in greeting.

"Well then, nice to meet you, I'm Connor," he replies. He reaches out but instead of taking her hand, he feels up her right tit. Her face grows red. You want to beat Connor but also feel like this sates that irrational anger just a tad.

"You know Connor, you have a lot of nerve to show up here after that party Friday night," you say to him.

He doesn't seem to notice your tone and his eyes are too focused on looking at Amanda's twat as she's sitting. "Oh yeah man sorry, somebody totally told me there'd be foam for that rave, I was as let down as you were." He thinks this is about the foam!?

"You know what? Don't mind me, you talk with your sister, pretend I'm not even here," he says. You see Amanda give a sigh, she probably picked up on his creep vibes the moment she showed up. "I'm going to be late but I just can't resist a hot piece of ass like you."

Amanda's eyes widen as Connor pulls out his dick and starts jerking it in front of her. You almost stand up but also think this is a good comeuppance for Amanda's overall attitude. You just watch her face as she looks anywhere else but at the guy jerking off to her naked body. The moments seem to grow longer as Connor picks up the pace and uses his other hand to feel one of her tits. Eventually he steps closer to her and announces he's going to cum.

She tries to look away but he grabs her chin and makes her face him. The first shot covers one of her eyes and then he aims lower, painting her chest with his semen. He tapers off and notices a small amount got on his hand from holding her chin, he wipes that off on her lips.

"Phew...thanks doll. Sexy little bitch like you, totally going to do that again sometime. See you guys around!" Connor puts his dick away and saunters off. Amanda seems mortified but just asks you where the bathroom is, careful not to let the cum on her lip actually go into your mouth. Oddly satisfied, you point and off she goes to clean herself up.