My little sister Sakura, now a college student, came over saying she missed the last train. It had been years since we saw each other, but her body... especially her breasts have grown so much that they are unrecognizable. They're huge and perfectly shaped, with soft cleavage that begs to be touched. As she struggles to fall asleep, her breathing becomes heavy, making my heart race. I can't help but reach out and caress her chest, teasing her nipples until they harden under my touch. She moans softly, unaware of what she's doing. But then I remember - this is my little sister! I stop myself just before things get too far. However, when Sakura comes back again the following week, those forbidden desires escalate once more...