Des:Erika and Junichi, a college couple living together with the goal of getting married after graduation, are living a happy life, but Junichi is a herbivore and has no activities at night, and Erika masturbates to relieve herself. . One day, Junichis father, Taro, wants to come to Tokyo, so he ends up spending a week at the house where Junichis son and his wife live together.