Winter break. Hinako has come to her boyfriend Makoto's relatives' house without her parents' knowledge. Dango, who is an elder figure, and Makoto's uncle and cousins are frequent visitors to the house. This neighborhood is a demonic land where the obscene custom of all the relatives 'tasting' the lovers and brides of the men in the family run rampant! Dango and his friends, who have their eye on Hinako's cuteness and beautiful breasts, try to seduce her in various situations. Hinako's small breasts are thoroughly played with, and her masochistic nature blossoms, and she begins to desire sexual intercourse...