Oof, this chapter is a real mess. First and foremost, it's screwed up the manga's escalation of threats to the MC. This new baddie is supposed to be some kind of taekwondo wunderkind super weapon...and he's matched by the injured thug who was effortlessly beaten in chapter two? The same thug who was completely helpless against a hitman who the MC had no trouble with? It's completely undermined the new villain and removed the idea that he's a threat.
Second, why is the chapter two thug suddenly helping the MC? They've had one brief interaction where the MC humiliated him in front of his lackeys. He's got literally zero character beyond "violent, arrogant thug", where did his sudden friendliness come from? Did I miss a chapter where it turns out the MC reminds chapter two thug of his little brother or something?
Hopefully this is a one-time fuckup. I've really enjoyed this series so far, I'd hate to see it devolve to crap.