Being a mischievous and naughty student who spent too much time taking care of himself, Ninomiya's academic performance was always at the bottom of the class.

In order to help her improve while not affecting the class's ranking, the homeroom teacher decided to spend his free time tutoring at home.

However, this did not change Ninomiya, but on the contrary, it had the opposite effect. She used her flexible body and super-cool sex skills to seduce the teacher. Faced with the temptation of such a young and tender student, it was very difficult for her to stay calm and make a wise decision.

The two continuously had sex on after-school tutoring days since then.