A mother, Reiko, who has a forbidden relationship with her son. Even though I knew it was a bad thing, my beloved son was so cute that I had no choice but to continue the relationship. Moreover, my son is unfaithful and always has libido, and even if his father is there, he approaches without hesitation. And the state that I can't do without my father makes Reiko's ma co tortoro and I can't stand it ….