Single mother Kazuya. Her only son, Kaito, has grown up, and child-rearing seems to be coming to an end. Still in her prime, Kazuya found a new lover and was enjoying being a woman. However, when she told Kaito about her intention to remarry, he flew into a rage at her lover and refused, shouting, 'Don't take my mom away!' This caused her lover to leave as well, and Kazuya turned to alcohol in despair... Suddenly, Kazuya became dark and drunk. But she felt warmth and joy seeing the immature yet manly parts of her son. Was it due to the alcohol, lust, or motherhood? She ended up teaching her son about a woman's body, hand-in-hand, as part of his sex education.
