Riri's daughter, Noa, was troubled by her boyfriend. She was unhappy with his gentle nature, indecisiveness, and weak-willed personality, which she found 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 clung to Riri, and Riri found joy in being relied upon. Eventually, these feelings led to a relationship where they desired each other... And Kotetsu decided to break up with Noa. What action did Riri take in response to that decision...? A distorted love leads to intense sex.