Shota's father makes a shocking confession to him. "I'm thinking of remarrying your homeroom teacher." Though he's shocked, Shota doesn't dislike the big-breasted teacher. But his father is reluctant to have sex with her, leaving the teacher frustrated. Shota enjoys his family life to the fullest, as if to fill the void left by his mother's absence! He takes baths with the teacher, sneaks into her bedroom, and gets closer to her with a mischievous Kokoro!