【A Beautiful Young Girl's Asshole Developed by an Old Man...】 Mihaka lived with her mother, and due to the single-parent environment, she started down a delinquent path. Then, her mother decided to remarry, and the new father moved into the house. An existence she couldn't like… During her mother's absence, that presence bared its fangs and revealed its true nature. She tried to resist the demon targeting her undeveloped anus, but she couldn't forget her mother's happy face about the remarriage, so Mihaka's asshole was corroded, expanded, and developed...
