Busty young wife, Yuika Onosaka, becomes addicted to pleasure after being played with by her father-in-law for a week. (KSBJ-379)

An elegant husband and blissful days—this was Yuika's life. However, one day, her husband's father, whom she had lost contact with, came to visit. The husband hated this father who had abandoned his wife and was always causing trouble. However, kind-hearted Yuika couldn't abandon her homeless adoptive father and decided to let him stay for a week. However, this was just the beginning of everything going wrong…