Kurihara Naichi was a little crybaby. She was adopted by her Chinese grandfather who lived in Japan since she was a child. Unfortunately, her grandfather passed away. The family house involved international inheritance and the first heir could not be found. The house was temporarily sealed by the court. Kurihara did not want to go to the orphanage, so he took all the cash in the family and left. Ryuguji Ken was only two years old when he was abandoned in the red light district of Shibuya. Kurihara Naichi was already four years old. When the sisters in Kabukicho hesitated, they took in this rebellious younger brother.
Update by chance!
Purpose: Change bad things and promote justice