I'm glad that we finally learn why Sanzo left the team so eagerly, but I can't help but feel so sorry for Goku, Hakkai and Gojyo for feeling so abandoned :<.
I never thought we would see Ukoku wearing his old suit again (in the present time). Seeing him setting up Hazel against Gokû (and the group) and learning that they met before the young man became exorcist leads me to think he isn't a stranger to this power the priest owns upon souls.
4/5 False peace and prosperity? The taoist is either a yôkai or sold to them.