In the quiet of her room, a German sister explores her body, her fingers dancing over her clit as she pictures her brother's cock. Lost in her fantasy, she doesn't hear him enter. Caught masturbating, she freezes, her cheeks flushing red. But instead of leaving, he watches, his breath hitching as her body responds to her own touch. She tentatively touches herself for him, her pussy glistening, before he can't take it anymore and fucks her hard, filling her with his hot cum.