Crisanto, bored and horny, retreats to the bathroom for a private moment. He strips, his skinny frame tensing as he wraps a hand around his hardening cock. Suddenly, the door creaks open, revealing his shocked sister, Cafla. She's skinny too, her body barely covered in a thin nightgown. They freeze, eyes locked. Cafla's gaze drops to her brother's erection, her cheeks flushing. She backs out, but not before Crisanto sees her hand dip between her legs. Later, they meet again, this time with a new understanding. Cafla's eyes are filled with a hunger she can't hide. Crisanto, emboldened, steps closer, his hand reaching out to touch her, to claim his sister's hidden desire.