He is a 19 year old Japanese male, who has a violent record of murdering anyone he deems bothersome, including his own father when he was 14. He now lives alone with his younger sister Koemi, whom he treasures deeply, and is extremely protective of, given the trauma they went through together as children, where they were physically abused by their father. His sadistic nature as a cold-blooded killer is kept a secret from his sister, who therefore regards him in a glorified light.