mother-daughter incest

Minami, a mother from a single-parent household, ends up marrying a man from a single-parent household through the introduction of an acquaintance. She dreamed of a happy married life, but in reality she is at the mercy of her self-righteous husband, and her daughter Koharu, who cannot accept this, continues to act rebellious. However, by chance, Koharu's weakness was seized by her stepfather, and his young body was played with in the name of education... When her husband's stepchild Takeshi found out about this, he made Minami suck his erect penis, saying, ``I'll educate my mother-in-law who raised her to be such a worthless girl!''