While his parents are away on a trip, Naoto comes to stay at his aunt Misako's house after fighting with her husband and leaving home. Aunt Misako treats him like a child, just as she used to, joining him in the bath and washing his penis as if it were natural, seeming to enjoy it. Naoto suddenly embraces her, but she rejects him, saying, "Naoto, you're still too young." Feeling strongly that he's no longer a child, Naoto sneaks into his aunt's room that night, determined to forge a new kind of relationship.