Yurie had a secret that she couldn't tell her daughter. She had been having a physical relationship with her daughter's boyfriend. Even though she knew it was wrong, she couldn't give up the pleasure she had once experienced, so the relationship continued. Then the topic of her daughter's marriage came up. If it went through, she would end up living under the same roof as her daughter's boyfriend as her stepmother... What conclusion did Yurie come to, caught between her perverse sexual desire and her hesitation about betraying her daughter?