Mitsuki, a girl who is cute enough to be embarrassed wherever she goes and is popular with male students, has been in love with a teacher at the same school for a long time. .In fact, this teacher was a pervert who could get away with his wife, and he was a man with a strong libido who wanted to be a teacher because he wanted to have sex with a young girl.A girl who fell in love with such a devil girl wants to be liked by her teacher, but she is toyed with for her sake.