Imagine staying over at FUWAMOCO's place and you're singing songs and playing games with them all night until all of you fall asleep.
And then at night you need to step out and go to the toilet really quick. On your way back you notice Mococo shifting in her sleep, slightly parting her blouse as she turns on the couch. You can't help but move closer to get a better look out of curiosity. That's when you feel something from behind - it's Fuwawa. She tiptoes while pressing herself against your back and whispers "She's cute, right?" in your ear.
"I know, let's do something fun..." she adds, while letting her hands wander lower on your front, reaching around to take your dick out of your pants. You're barely a foot away from the sleeping Mococo while Fuwawa starts to gently jerk you off, pointing your dick at the face of her sleeping sister.>"Don't make any sounds, or you'll wake her up..." you hear, before she licks your ear, clearly enjoying what situation she has created here.
You know this is a dire situation, because on one hand Fuwawa's touch feels amazing and her soft and warm hands are heaven on your shaft, but on the other hand you know that if this ends in you cumming all over Moco-chan's face and she wakes up or learns about this at all she will kill you.
