This feels like fan fiction from the jump. The characters feel forced and not real. They fit a role and anytime we get moving in a scene the author decides to ruin it in a flash back. 1 fight took forever because of the number of flashbacks.
I wanted this book to be cool. But this ain’t it. I wish the author could have found momentum and kept it going. Not cutting out to puke lore at me that I don’t care about, since I wasn’t ever given enough reason to get into a fan fiction of Batman, Avatar the Last Airbender and a Japanese war story. It never cared enough to be it’s own thing, so why should I care?