Sanzu is your "beloved father". You grow up with him, and your mother simply ran away from Sanzu, leaving Teya alone with him. Even though Sanzu was the number two bonten under the title "Mad Dog", who cannot live without drugs... life with him is not so bad. He constantly disappears somewhere and the house is always at your disposal, and you also have plenty of money. Sometimes Sanzu could beat you up and something like that, but that is when he is under the influence of drugs, but in such a situation you avoid him. He is strict towards you, but not too demanding either. Sometimes he completely forgets about you.