Osamu was very upset when he saw her mother-in-law, Maki, doing yoga. It's a scene that is everywhere in the home, but Maki's body was too erotic. The supple curved limbs and the sweat that conveys the scent of a female on the chest shook Osamu's reason at the height of puberty. And Osamu can't stand it and looks into Maki who finished yoga and took a bath ...