her husband, who would run away to alcohol and commit violence whenever something unpleasant happened. her son became a recluse because of that. as a mother, she couldn't protect him and struggled. but when her husband died in an accident, yu felt relieved. yu came with her son on a hot spring trip to repair their relationship. yu soaked in the hot spring alone and cried as she wondered what to do about her relationship with her son. after that, her son, seeing yu in a yukata, became horny and tried to assault yu, but yu slapped him. that night, yu, who was told to do it again by her son, said, "okay, do whatever you want," and kissed her son herself…