It's been half a year since Yusuke's father left home with another woman, and Kana has always been tough on his son, but he knows his mother is still grieving. Seeing the loneliness on his mother's face makes Yusuke feel heartbroken, but he doesn't know how to make his mother happy again. One day, Yusuke accidentally witnesses his mother masturbating. From that time, he was determined to replace his father, bringing happiness to his mother. At first, Kana was also surprised and confused. But when she realized her son's concern and worry for her, she gradually accepted this.
