Originally Posted by k-lai
Or maybe he was the analyser, remember how he was keenly watching kenpachi's reiatsu as well as understanding yama's bankai flavours lol
Very possible...At this point we have the real Boss showing up...
You have Shinsui and ukitake being Yama's oldest students, Unohana, Ichigo and Urahara maybe being the last ditch efforts to protect SS. This Boss will be beast ! So will Yama die or just get his bankai stolen?