After a long period of nofap abstention, the protagonist brings a schoolgirl over to his place and bangs her silly even though he doesn't have any feelings for her...
A man and a high school girl with huge tits who is (ostensibly) at his house to learn about agriculture spend an entire day indulging in each other before the man's wife comes home...! A 70 page monochrome manga.
This is an erotic mother-daughter work that begins when a loving couple becomes addicted to sex after their first experience. After the mother of the girl spies on them having sex, a series of sexy events is set off.