I didn't expect that blonde dude to actually betray him, he better stab that old man and s...

I did. Σ( ￣□￣||)

I'm too naive ಥ▽ಥ -cries-

He was just acting weird. They say trust no one when it comes to things like this. Σ(っ°Д °;)っ

I've learned my lesson...never trust shady people they can stab ur back anytime, theoretically & literally at that ;^;

I agree! When I read each manga I put myself in there shoes. Σ( ￣□￣||)

I think that Kouki didn't actually betray Nirasawa. They were talking about their plan being super risky. Also, after Kouki hit Nirasawa he dug through Nirasawa's clothes looking for the camera, but on an earlier page it was Kouki who had the camera. I believe this is what their plan entailed to get proof of Sagawa's involvement with Shao Chen.