Although she is very beautiful and gentle, because she is a bad student with academic performance always at the bottom of the class, Chisa Hoshino is often looked down upon by her friends.

With the desire to improve her grades, Chisa Hoshino went to her homeroom teacher to ask for help. He did not hesitate to immediately agree and will spend some of his time after school to tutor her.

But nothing is free, the tutor label is just the surface, this lustful teacher has seen Chisa's plump body before, so he took this rare opportunity to seduce and entice her to have sex with him.