Hiroshi, who has been dating his girlfriend for six months, visits her home for the first time and is excited by the beauty and curves of her mother. Her mother is kind, intelligent, and has a sweet fragrance. Hiroshi is kind enough to stay at her house that night, but when he leaves the room unable to fall asleep, he bumps into her mother in the hallway in the middle of the night. "What's wrong, Hiroshi? Can't you sleep? Shall I give you a massage?" she asks, and when he enters her bedroom, he is met with an unexpected...!