Soudatsu! Komon no Sensei

A young man named Tetsuya finds himself in a peculiar situation when he is assigned as a private tutor to a wealthy family's daughter. The girl, named Riko, is a beautiful but spoiled high school student who initially resists his guidance. However, their lessons quickly take an unexpected turn as Tetsuya discovers that Riko's mother has hired him with a hidden agenda. The mother, a seductive woman, intends to use Tetsuya to fulfill her own desires, leading to a series of intimate encounters that blur the lines between teacher and student.

As Tetsuya becomes entangled in the family's web of secrets and lust, he must navigate the dangerous dynamics between mother and daughter. The situation escalates as both women compete for his attention, each with their own motives. Tetsuya finds himself caught in a battle of seduction and power, where every lesson could lead to a new level of intimacy.