Yuka's husband is posted overseas, her son is in a rebellious period, and frustration grows from loneliness, and masturbation has become a daily routine. One day, her son's friend Makoto, who came to visit her, injured both of her hands. Yuka feels sorry for her and buys him to take care of her as he is unable to manage her daily life. Unlike her rebellious son, Makoto felt the joy of serving him because of his honest reaction.One day, Makoto was in the middle of being wiped.