Kaoru Hanayama: Yakuza
Retsu Kaioh: 4000 year old chinese bank account, real answer: runs a school
Yujiro Hanma: does what he wants
Oliva: paid by government
Baki: inheritance from mom
Jack: either pit fighting, tokugawa, or he's the baki version of mr shakedown from yakuza 0. Considering how...