DEAR SISTER NOMI Nomi is a beautiful girl transferred to Chibakasaki High, she's smart and talented, diligent and humble. But some of her classmates were jealous and they started to pick and bully her at the end of school every single day. But one day they took her on the butcher house to film and torture her, but Hidami goes too far and accidentally killed her. They get rid of her body and remain silent of their murder. Minori, her twin sister was waiting for her everyday and Nomi didn't come home until days has passed. She found her body by the river while walking the dog in the middle of the morning, and knew what she will do anything to avenge her sister's death.