Hikaru's father was an extremely strict person, and he often yelled at him because he wanted to be good to him. Mary, on the other hand, was very gentle and cared about Hikaru. Every time she was scolded by her father, Mary would make her son's favorite dish again. And when Hikaru reaches puberty, he is curious about the opposite sex. And when he accidentally discovered his mother masturbating, he couldn't forget that image. When he continued to get low grades, his mother was slapped by his father for speaking well of him. At that time, he decided to confess his feelings to his mother, his feelings for the opposite sex. Even so, Mary didn't pay too much attention to this, so Hikaru decided, he would confess to his mother until she accepted him. And in the end, all his efforts paid off. Today his father went on a business trip, only the mother and daughter were left at home, and he took all the courage to kiss his mother. Mary also accepted his kiss and the wrong relationship between mother and daughter began from there...