It's been a year since my wife passed away. I ended up living with her son and his wife. I pay more attention to my health than most people, and my lower body is in good shape. That's why I get horny when I see my son's wife, Hikari. However, I never thought I would cross the line just by thinking about it in my head. ...That was until yesterday. I don't know why, but I can't control my sexual desire and my erection remains even when I masturbate. At that time, when I saw Hikari-san, I couldn't control the urge to rape her.