One day, she suddenly receives a letter from her ex-husband... He wants to meet her son. After reuniting with her ex-husband, the son becomes Kokoro and his feelings for his mother change to love for the opposite sex. He wants her to always look at him. Before she knows it, the mother also begins to feel love that goes beyond that of a parent and child. They love each other, but they can't say it out loud... I love you, Mom! A son approaches his mother. This is what happens between parent and child... A mother is caught between conflict and pleasure. She feels her son's love on her skin... The two open the forbidden door and seek each other in incestuous sex.