He has been in this whole current arc
Sudou betrayed Asami by selling some of his guns on the side, using a "hostess" to blackmail a dirty politician related to that, and he having Aki strung up and ready to cut to pieces before the rescue.
I know he betrayed him but I don't quite remember who he is but now I think I do thanks
He was the manager of one of Asami's clubs. First appearance chapter 41.
Okay but who is this sudou person ? I don't remember him at all or is it the first time he's appearing (￣∇￣")