My shy son, who had no friends, made a new friend named Yuma. Yuri was delighted and always warmly welcomed Yuma into our home. Seeing her son so happy brought her genuine joy. However, Yuma's true nature was not so simple to understand. One day, when her son was away, Yuma made a bold demand of Yuri: in exchange for maintaining his friendship with her son, he wanted her body. Shocked by his words, Yuri was forced to reconsider her position. Torn between her fear of losing her son and her desire to protect her dignity, she faced an impossible choice. That's when the story begins.