Why doesn't the MC just kill him? Why keep a fucking useless waste of space alive? Makes zero sense whatsoever, especially since it's more than obvious that he's going to have to kill him anyways. Fucking idiotic shit plot.
@Siikalahna why would the MC kill literally everyone who is cocky or a dick? The random is just a lazy pos, odds are he will see the MC do something crazy and beg him to be his teacher.