"I CAN'T TAKE IT, TEACHER! IT'S TOO BIG!"KENGO SAKAMAKI goes back to his hometown for student teaching practice.And there, he finds out his alma mater that used to be a boys' school has become a girls' school.The students there are all NAUGHTY!! The student council president masturbates with a vibrator,students go into the men's bath, and what's more, some girl begged him to show her his dick!KENGO teaches his students a lesson with his big cock.So begins KENGO's harem life at the girls' school!