It is him. Just compare his accessories now with before, particularly, his how should I call it? Bracelet for men?haha I think it's around Ch85-95 when he challenged Tanzawa.
Btw, it's hard to think that these guys are just delinquent kids. I thought the first arc was brutal, but this time, it's far worse and I think it started to become unbelievable for me when the huge boulder was used to crush a man's leg. These kids are like hardened members of a criminal organization. It's still very enjoyable though. Can't wait for the next chapter. Thanks! Please also pickup Dokgo 2. Zeroscans is so effin slow.