The heatwave continues on a midsummer day. After losing my place to live in a fire, I end up staying at the home of a colleague who I've had a good relationship with since childhood for a few days. My colleague's mother, Shizuka, and I borrow and lend historical novels from each other. She's a beautiful and elegant woman who I admire. One day, I find out that Shizuka is sexually frustrated. Since then, I've been secretly raping her, hiding it from my colleagues, and before I know it, Shizuka is the one who wants my dick...