Adui
Noooo. This was unfortunate and unrealistic. Author you've just made MC into one of those Cultivation MCs. What he did was just creating unnecessary trouble that he can't really handle right now. MC should have taken control of the narrative. Once the golden body skill wore off for Andrei, MC could have announced to the audience that he will kill dude unless his dad requests him not to. That sends the message that he will not be fvcked with whilst simultaneously making sure he doesn't poke trouble unnecessarily. Or if you wanted him to go against the father then you could have really rubbed it in. MC could have announced to the audience that if the father begs for his son's life or pays a B rank skill then he will let Andrei go, if not, then he will cut off a limb every 10 seconds until he kills him. If father tries to step in, then he could killed or flown away with Andrei. That serves to humiliate the father whilst showing that the MC is ruthless with his enemies. But this current half-baked approach is the worst.