Fairly certain it’s Two. Shang’s mission is to ferret out shady characters by acting shady, and both Zero and One made it clear they do not wish to be approached, while Two almost intentionally made himself look shady in his introduction.

Really??? If the MC had been rushing to save his best friend and been knocked out and placed in house arrest unable to help, we would all be cheering for them taking revenge on whoever had stood in there way…. What she did was tame, especially considering she didnt know he had helped her friend