Beautiful pianist sisters in the neighborhood, Toruru Makoto. In order to aim for the same path as her longed-for sister, she was working hard at piano lessons at home every day. The neighbor, a withdrawn NEET middle-aged man, feels relentless resentment at the sound of the piano and finally yells at the house where his sister lives. One day, a younger sister who is brought to a man's house and is raped. And the devil's hand gradually extends to his sister. * The contents of the recording may differ depending on the distribution method.