Rin lives with her son, Kazuya, on a long-term business trip. One day, Kazuya's classmate Ashida came to apologize for being guilty of bullying Kazuya ... Rin, who apologizes obediently and feels sympathy for his circumstances, begins to take care of him. However, Ashida's true intention is to return Rin's kindness. As soon as they are alone, they forcibly make a deal with her. Rin is worried about his unfaithful relationship with his son's classmates, even though he is force majeure. However, the joy of the phallus that I had tasted for the first time in a long time made my body unable to suppress the aching ...