While his parents go on a trip, his mother's best friend, Maina, is looking after him. Maina's sweet scent makes Ryosuke fantasize about sex. He wants to touch her smooth, pure white skin, and be buried in her soft-looking breasts. With Maina in his head, Ryosuke plans to use her warm underwear as masturbation material, but he is found out to have stolen it. However, instead of getting angry, Maina kisses him and asks, "Are you satisfied with just her underwear?"