Toya was born into a wealthy family. When he was 12 years old, his parents were assassinated and he did not get justice in court, so he became resentful and sought revenge, When he grew up in his 20s He was adopted by the Yakuza organization. And when he was 25 years old His adoptive father, the head of the Yakuza organization, died from a strange fever, All inheritance belongs to Toya.