Rieko has raised her son Shuichi single-handedly. However, perhaps because she was too spoiled, she behaved selfishly and secretly bullied her classmate Hajime. When she finds out about it, Rieko goes to apologize to her instead of Shuichi, but... Hajime, who was furious with her convenient offer, asked her for an apology service by her body. She even corners Shuichi, whom she doesn't know anything about, and begins her revenge. At the beginning of her, she said, "Please give me your mother."