Hot Summer Job/Take advantage of your sister’s exposure
Your sister is in a very compromising position right now. You could so easily just reach down and... seriously? Are you really having these thoughts about your little sis? It's possible having a middle schooler fondle your junk for fifteen minutes might not be the best for your train of thought. Of course it's Bree's fault she's not wearing underwear, but she doesn't want you to think things like this... Does she? Why else is she dressing like this? A dare is a pretty convenient excuse but she could have just changed after school. She certainly expected you to come home, right?
Kylie's thin and nimble digits induce a ball-clenching shiver that courses down your shaft and through the rest of your body. There's no way you’re thinking straight. Better push aside these thoughts for now, which should suppress your waning conscience in the process.
"Hey Kylie. Think we can force a forfeit from her?" you ask in a hushed tone.
Looking into her eyes it's pretty obvious you two are on a similar wavelength right now. A sinister smile creeps across the teen's face immediately. "Easy."
You really just wanted an excuse to get in on the action in front of you, but Kylie's confidence is unexpected. She leaves you behind without a second thought, more eager to get started than you are.
You push off the couch as Kylie lands on the mattress at your sister's feet. The prime location already taken, you saddle up beside Bree opposite Larissa. You join in on Rissa's tickling as Kylie forces her way between your little sister's legs.
"Hahahaha! No fai-aaaAAHHH!"
Bree stiffens her entire body in an instant. Her hands push against the mattress below her, mouth open, back arching, while her legs squeeze Kylie's upper body. The older girl has gotten up close and personal with your sissy's snatch, crouched down about as close as she can get to it without eating her out. The backs of her knuckles are pressed right up against the underside of Bree's smooth mound, her fingers all pointing up into the air. Except... her middle finger is missing.
"Ry! S-she's..."
"You can't stop me!" Kylie shouts, pushing at the bare legs wrapped around her. "It's a rule!"
Bree stares up at you with an innocent puppy-like expression. You already established that you're in charge tonight, so she's looking to you for mercy. Unfortunately for her this was your idea.
"Sorry sis. This is the game. So..." You pause dramatically and descend onto your sibling. "...you can't stop me either."
Bree draws air from between your lips, gasping as you lock onto hers. Her hands shoot out into the air and latch onto the first two things they meet: your shirt and Rissa's arm. She pulls at both of you as her senses continue their overload. Her legs go as limp as she can make them, spread apart just enough to not suffocate Kylie. You can tell Bree is trying her best to keep playing the game and not fight back but she can barely even make sense of what is happening to her.
Larissa's tickles are now little more than a gentle rubbing. She's too distracted by what's happening around her, switching her focus between her sister lezzing out and your incestuous kiss. You figure that rubbing could be put to better use though, so you guide her arm (with Bree still attached) onto your sister's chest. Meanwhlie you reach down as far as you can to grip the outside of Bree's slender thigh before rubbing up and down the gentle curve of her hip. You reach your thumb forward, sliding it up onto her pelvis and back to her thigh with each stroke.
Bree has closed her eyes now. Her lips move weakly beneath yours. It's hard to tell if she's just overwhelmed or if she's given up. You look down at Kylie from the corner of your eye. You silently agree that you had both expected Bree to call it quits by now and be forced into a forfeit.
Upping her game, Kylie grabs Larissa's free hand by the wrist and pulls her down into the juicier action. After forcing her fingers into a V, Kylie guides her sister's digits over your sister's vulva. Larissa is made to rub either side of her friend's slit while Kylie thrusts into her a bit faster. Maybe having different pairs of hands on her bring Bree to her lmit. You also ante up, slipping a hand under Bree's shirt and tweaking her nipple. You're met with a groan, but little else. Is your sis that determined to avoid "losing" the game, or is she enjoying herself enough to not care?
You wave your hand at the other girls, motioning for them to stop. You all pull away at once. Bree gasps again before going all the way limp.
"Are you going to take a forfeit?" asks a mildly confused Kylie.
Bree slowly scrambles into a sitting position, bringing her legs together and placing her hands in her lap, pushing her skirt down. You all watch patiently as she pulls herself together. After a moment she glances about, dazed.
"...huh?"
"A forfeit, dummy!"
Bree glances over at you again. "Wait, why?"
Kylie sighs in dramatic fashion. "Well, for one, you basically just stopped playing."
"No! Isn't it just my turn now?"
You raise an eyebrow. You definitely weren't expecting that. "Yeah, I guess so."
Bree balls up a little tighter as she thinks about this. "Okay, but... can you just tell me who did everything? I... I'm not sure."
Kylie is quick to protest. "No way! That's on you! It's your fault if you suck at simon says. Just take the forfeit!"
"Come one Ry. Please? Can I at least try?"