Riri's daughter, Noa, was troubled by her boyfriend. She was unhappy with his gentle nature, indecisiveness, and weak-willed personality, which she felt was unmanly. One day, her frustrations exploded. Her boyfriend, Kotetsu, was verbally abused by the strong-willed Noa. Noa left Kotetsu and stormed out. Riri felt sorry for the devastated Kotetsu and tried to comfort him. At that moment, Kotetsu confessed that he had grown up without a mother and never knew a mother's love. Kotetsu's gentle nature, the responsibility for her daughter's insults, and the fact that he never knew a mother's love—all these emotions mixed together, and Riri was overwhelmed with maternal feelings towards Kotetsu. Kotetsu dotes on Riri, and Riri finds joy in being doted on. Eventually, these feelings develop into a mutual desire for each other... And so Kotetsu decides to break up with Noah. What action will Riri take in response to that decision...? A twisted love leads to intense sex.