When he was young, he had a faint crush on her. Now it's lust. Kenji has special feelings for his aunt, Eri. He mustn't let anyone know. That's what he decided, but one day, when he peeked into the bath, his secret feelings began to spill out. Eri was masturbating in the bathroom. The erotic sight of her soft skin twitching lasciviously in the steam of the bath strongly shakes Kenji's reason.