Have you been following the series? Then this is another chapter of this huge war between Oni and Genma. A great one.
Everything that has come to us from the japanese culture has been polished and ornamented in the way fairytales should be.
Well Dark Age was bad for everyone who knows a bit of history. It was stinky. Wars arouse quite often recruiting young men who had to help their families. Everywhere seem to be really far. None of us would be able to live that age after having known videogames, for sure.
This is why a terrible time for humanity must be told as if it were told to children. An the big demon came with thousands of little demons to enslave human beings, ... FOREVER.
These are the premises for every single Onimusha game. However the fairytale being the basement of the storyline is not everything this game has to offer.
Fast responsive characters who fight ugly demons in beautiful surroundings with different weapons. Excitement. Satifaction.
I am not very objetive because I love this series. But if you have an eye for games (Any game) this is something you should try. At least once.