It's been him all along?

OMG, Yamane is the betrayer? Wouldn’t be too obvious to reveal him now? Don’t tell me that there are others from the police? And why is Terashima always surrounded by criminals? First it was Sudou and now it’s Shinozaki; you should pick your surroundings man!

Other than that, the whole boxing championship thing was pretty well done and I really liked that Kubozuka dude even though he was a murderer.