It was a pretty heavy book, but kind of goofy at the same time. In Truancy #1, Umasi has a lemonade stand when Tack sees him for the first time, and that's OK. It's just a weird thing to have, a quirk. But in this book, #2, which chronicles Umasi's and Zen's rises to power, they didn't really give a reason for the stand, just that Umasi likes lemonade and to put it in the next chronological book.
I wasn't very fond of Umasi or Zen. They didn't pull on the ol' heartstrings or anything, they just made me wince a lot and try to hold in vomit as they gruesomely beat up people. Isamu stuck in a few people for Umasi to interact with and supposedly gets taught something through or by them, but I didn't really see that, even when they TOLD me he learned from them.
The whole violence aspect of this book is way overboard. There's uncountable gut-punching, crotch-kicking, and beat-up, knocked-out bodies. It's almost savage in that way. If you want something, beat up the person who has it. Also the child abuse in here was really disgusting. Rothenburg abuses his son, physically and emotionally, and the cops think of killing vagrant kids as a sport.
I really only read this book because it had a katana on the cover, or else I never would've picked it up. If you read the first book, this is probably something you'd want to read, but other than that, skip it.