Reiko learns that her son's best friend Ya is still a virgin. Reiko, a carnivorous woman who burned up with the help of her daily frustration, approaches to get the first cock when her son stands in the bathroom, but Tatsuya immediately explodes with Reiko's terrible technique. Reiko was depressed when she saw Tatsuya running away with embarrassment and humiliation. That night, Reiko wearing a bondage suit appears on Tatsuya's dream pillow, where daytime events are unforgettable.
