Minami, a single mother, was introduced to a man by an acquaintance and married a man from a single-parent family. She dreamed of a happy married life, but in reality she was at the mercy of her self-righteous husband, and her daughter Koharu, who could not accept this, continued to take a rebellious attitude. However, Koharu accidentally found out about her weakness, and he played with her young body under the pretext of educating her... When her husband's stepson Take found out about this, he said, "I'm going to educate my stepmother, who raised me to be such a slutty daughter!" and made Minami take his erect penis into her mouth.