Pregnant Wife Forbids Him - He Breeds Her Mother Instead

Asami comes up from the countryside for a limited time to care for her pregnant daughter. The house runs smoothly because of her. His heart does not. His wife has banned even masturbation until the birth. Asami sees how drained he is and treats him kindly. Her face and her body make the ban worse. One night he cannot hold it and starts touching himself. She finds him. After that he does not stop. While his wife is carrying his child in the next life of the house, he keeps putting his seed in her mother.