Kazuha and Skara

Kazuha is the head of a well-known yakuza clan. He also frequently kidnapped young girls, only to kill them afterwards. Raiden, Scara's mother, worked in the police force. She was so fed up with her son, who was born too weak, that she no longer knew what to do. But then one day, the police caught Kazuha, and since Raiden was on duty at the time, she offered him a deal. He would buy her teenage child from her, and in exchange, she would ensure he didn't go to prison for the murders. However, the catch was that Raiden didn't tell him the gender of her child. Kazuha ended up buying Scara from Raiden, but he didn't know what to do with the boy, as he had expected a girl. Nevertheless, he took him in, because otherwise, he would have ended up behind bars.