Sister-in-law raped

After marrying Maki, Ryoichi's older brother, Ryoichi, suggests that his younger brother, Jiro, who was living with him, live in an apartment. Jiro is jealous of his older brother and his wife who are trying to get rid of those who get in their way and live a happy life on their own. His admiration for his brother's wife, Maki, suddenly turns into hatred. He puts Maki into a coma, locks her up in a dimly lit basement, and lets out his selfish desires. Jiro rapes his sister-in-law like a sex slave while spouting insulting words. Furthermore, Maki's only point of view, Ryoichi, is attacked...