Sister-in-law raped

Mr. and Mrs. Nakamori have been married for five years. Her husband, Takeshi, is an ordinary office worker, and his wife, Reiko, is living a simple but happy life as a full-time housewife. One day, a man suddenly appeared... It was Jo's younger brother, Ryoichi. Ryoichi, who is jealous of his brother and his wife who have inherited an inheritance and are living comfortably, rapes Reiko while Jo is sleeping. Reiko breaks down crying while taking a shower. After this, another tragedy occurs for the Nakamori couple...