The only musou game I have played and I'm not gonna lie...I only played it cause I love Zelda.
However it turned out the game is surprisingly addictive. Running around in the map and fighting brainless mobs is both intense and relaxing at the same time. The map inspired by the original Zelda is huuuuge. No exaggeration, but this is one of the most rich content games you can play. The definitive edition even more.
Although it didn't convert me in a musou fan, I had a great time with it.