Mama Shibori 3 no Jijou

The protagonist of this story is the son of the protagonist from the previous work, and he is worried that he too will suffer from the same condition as his father - hyperspermia. One day, he finds an erotic book in his sister's room, which causes his genitalia to enlarge. Soon, his mother finds out and takes him to the hospital, where he is diagnosed with hyperspermia. The treatment prescribed is to release more sperm. The mother and sister do everything they can to help him, and even the mother of his classmate and a female doctor at the hospital assist him.