Boing Boing brought them in to play the game and they seem to enjoy it and find it authentic. I particularly enjoyed this back-and-forth:
K: If they had shabu (crystal meth) as a power-up item, that would be realistic. It’s a yakuza game.
S: They have sake!
M: Kiryu is an executive, right? We all know the guys at the top don’t drink or do speed.
S: Yeah, not anymore.
M: Can you smoke in the game? I forget. That should be a power-up.
S: Cigarettes and shabu should be in every yakuza game.