Kenji and his mother Ayumi live together in a single-parent household. Kenji's mother's younger sister, Kana, came to visit. In the past, Kana often played with him or took baths with him. The aunt who hadn't seen them in a while was still beautiful, and it excited Kenji. That night, while Kenji was taking a bath, his aunt entered saying, 'Let me wash your body,' with the same old feeling.
