I got Nioh 2 Yesterday. It's basically a Nioh DLC, from a casual glance there is very little to suggest that you are actually playing a different game. It seems harder though, I keep getting killed in one or two hits and the enemies all have a lot of health, it was like that in the first but it seems more severe now(although I seem toe recall that I struggled early on in the first game but then it all became easy later on).

An interesting thing I noted is that Hideyoshi is voiced by the person that plays the same character in a Taiga drama(called Gunshi Kanbei) and the character model looks like him as well(that was what tipped me off in the first place).