When her husband passed away due to illness, his wife Miyu and her daughter Ai were left behind. Yuji, Yuji's brother-in-law, extended a helping hand to the couple. Yuji was asked by his brother, who had only a short time left to live, to look after the couple. Yuji, who had always loved Miyu, reluctantly agreed, and the three of them, Miyu and Ai, whose husband was working away from home, began living together. However, as the days went by, Yuji's hidden feelings and sexual desires went out of control, due to his anger at his brother for forcing him to take on the family business. The two of them then faced daily abuse, with no way to resist...