A super three-dimensional G-cup that makes all the male students erect!! 27-year-old Toba Miki, a married woman and active physical education teacher, makes her AV debut without taking off her clothes for the first time!! She appears in an AV in the short time between the end of school and when her husband gets home!! During class... The busty teacher, who is bad at teaching, catches the attention of the male students with her G-cup that shakes every time she runs, and climaxes in her first affair with her breasts shaking even more than during class!! This physical education teacher who loves exercise also loves sex!!