Hot Summer Job/Interrupt the girls
You swing Bree's door open the rest of the way. "Hey!"
The girls are startled by your unexpected entrance and loud greeting. They scramble to put something away, Larissa passing to Bree who then shoves it under her pillow. You raised your voice just for fun to see if you could scare them a little, but now that they're trying to hide something from you your interest is piqued.
"What's up?" you ask, casually strolling into your sister's consistently messy room.
"Nothing," Larissa declares assuredly.
"Oh yeah? What did you just hide?"
The girls share a quick glance. "Nothing..." answers Bree, much less confident than Larissa.
"Uh huh. Can I see what nothing looks like?"
"It's nothing!" insists Larissa.
"Yeah, and I'd still like to see it," you repeat, channeling your 'in charge' voice from earlier.
Increasingly nervous, they now search each other's eyes attempting to communicate telepathically. But you don't need superpowers to read their faces. It's clear neither of them are sure how to get out of this but they're both worried that they're in trouble. It's Larissa who eventually cracks.
"We were just playing a game! Promise! Kylie wasn't even using it! You two were... busy." Larissa looks down with that last comment.
It's an admission for sure, but neither of them take out what they put away. You drop the bags then step forward, leaning past your sis to fish around under her pillow. What you pull out is Kylie's cell phone. Very interested now, you go to unlock it and find it has a passcode. Not surprising.
"Ah, so this is nothing? What is nothing's password?"
"You're not allowed!" Larissa snootily declares, turning up her nose.
"Yeah? I doubt you are either. So what is it? You're not in trouble yet, but you might be if you don't tell me."
"I'm not telling! It's my sister's, and no one is supposed to touch it or-"
"It's 6, 9, 6, 9," blurts Bree, helpfully.
Larissa opens her mouth in shock and then crosses her arms in a huff. "Why'd you do that? He couldn't've got in. Now he's gonna find out."
"Find out what?" you ask and then find the answer as you unlock the phone. A picture sharing app is open and the pic on the screen smacks you in the face with nudity. It's a very well lit shot taken between a girl's legs. The entire frame is filled with flawless porcelain skin. A dainty hand reaches up from the bottom of the shot, fingers extending upward to cup the bare crotch between this girl's legs. What isn't covered by her fingers is the small tuft of wispy pubescent red pubic hair just beyond the girl's fingertips. And on the ends of those fingers? Chipped blue nail polish.
Even if you hadn't just fucked the fine pussy hidden within this pic, there's no mistaking that it's Kylie.