SIS-108 I'm quitting my younger brother ... ~ The devil brother's diary whose reason is broken ~ Nagi Asakura

I would have a grudge against such a stupid younger brother's sister, but I decided not to put up with it anymore. "Hey, sister? Let's enjoy the time of the last siblings!" The tragedy of the sister who is miserably committed without being able to compete with the power of her serious brother! Forbidden home video!