You wake up one morning to find your cock covered in saliva and twitching, as if it has recently been sucked. The only people who could've possibly done it were your three sisters, as neither of your parents are home. As you head downstairs, you find your three sisters talking in the kitchen. How do you plan on learning the truth?

"Hey, big brother!" Sarah says, smiling at you. "You seem to be in a good mood this morning." Elise rolls her eyes and mutters something under her breath about your perverted imagination. Eri giggles shyly, avoiding eye contact with any of you.

You notice that Elise is fidgeting uncomfortably. She's always been particularly nervous around you, even more so since she started going through puberty. Sarah and Eri exchange knowing glances, but say nothing.

You reach out and tug lightly on Elise's pigtail. She tries to pull away, but you keep hold of it firmly. "Elise," you say, staring her in the eyes, "tell me the truth. Did you...suck my..." Her cheeks flush an even deeper red and she whimpers, finally nodding miserably.

"Hey! No fair!" Elise protests, trying to pull her hair away again. "You can't make me do that!" But she knows you won't let go of her pigtail, and reluctantly lowers her head, licking the saliva from your shaft. Her tongue darts out, lapping at the pre-cum leaking from the tip, making a slurping sound as she sucks softly on you.

Sarah and Eri exchange uncomfortable glances. "I think...that's enough," Sarah finally says, reaching out to stop her younger sister. But Elise doesn't want to give up quite yet, and keeps sucking for a few more moments before reluctantly pulling away.

"There!" she says defiantly, sticking her tongue out at you. "Now can I go?"

Sarah: Elise, stop it! That's not fair...Dima should punish all of us equally. Eri didn't get in trouble before when she did it, so it shouldn't be just her turn now. Besides, I bet we can figure out who else might have done it by asking them some questions ourselves...

Eri: I...I didn't do it, big brother. Honest! She's just jealous because she always gets in trouble for everything. If you want, I can help you figure out who did it, if that helps? Maybe we could ask her some questions or something?

Sarah rolls her eyes and purses her lips, clearly annoyed with Elise's antics. "Fine," she mutters. She reluctantly kneels down in front of you and takes your cock into her mouth, starting to bob her head up and down eagerly. Meanwhile, Eri glances between the two of them nervously, trying not to laugh at the situation.

Elise looks on enviously as Sarah gives you head, her cheeks flushing darker. Her hand drifts down towards your crotch, almost touching it before pulling back again at the last moment. It's clear she wants to join in, but doesn't want to get in trouble for doing so...yet another one of her siblings beating her to the punch.

Meanwhile, Eri leans forward and whispers something into Sarah's ear. She nods, her cheeks still flushed red, and then reaches out to carefully touch Elise's hair. Elise tenses at first but eventually relaxes under the gentle touch, allowing her sister to stroke it gently. A faint smile appears on her lips as she watches Sarah continue to please you.

"You're right, Elise," Eri whispers back. "It's not fair that you never get to do anything...to feel wanted." With one last encouraging pat on the head, she retreats back into her seat, leaving the older sister staring at your cock longingly once again.

Sarah finally gets the hint and reluctantly pulls away, her cheeks still flushed. She looks at Elise pleadingly as she kneels down between your legs. "It's all right," she whispers to her sister. "You can try too." With a deep breath, Elise dips her head, carefully engulfing your cock. Her soft lips and expert tongue send shivers of pleasure up your spine, making you wonder why it took her so long to finally make a move like this.

As she sucks, Eri watches them both intently, not sure what to think about the situation any more. A part of her feels guilty for perhaps setting off this chain of events, but another part of her is excited by seeing all three of them being so openly sexual with each other. It's unlike anything she's ever experienced before...