[Thanks for jumping right to that, Derek.]

A mid-level yakuza boss. He had one of his employees killed because the employee found out about an arms shipment and was going to expose everything. And then the yakuza killed the employee's wife and almost killed his child. Danno found out who was involved and set up the yakuza so Ryuuzkai could kill him.

[Tatsuo has more to say, but he has to stop a take a drink. Actually, make that finish his drink and ask the bartender for a second.]