Despite my reservations about Riboku's political ingenuity, I do admire his dignity for refusing Shunsuiju's frank suggestion. It's the right one, too, in the long run, to be honest. Riboku may be good at military tactics, but ruling Zhao is better done by Prince Ka.
That aside, I wonder if Ryofui will attempt another coup since some of his remnants from Ai come from Chu and Zhao courts. Hmm. Troubling, as always. I wonder if there's another possibility of him truly helping Sei like Seikyou did, though? Most likely not, but it's still nice to think of.