As a fan of the bleach series, I have mostly only been playing through the story mode of this game so far. The combat system is relatively simple, yet flashy. In story mode, I feel as though I am watching the key points of the anime much more than I am playing the game. I haven't noticed many main details left out, however, you have the ability to skip scenes in the story if you wish to focus on battles.
I will advise against purchasing the game on steam as I have read reviews of individuals unable to play the game due to bugs. However, on xbox, I haven't noticed any gamebreaking issues at all. Seems like a solid launch to me.