@N0V4 : The problem is they tend to double down on their pride, not lose it. The same way so many groups out there double down on their beliefs and refuse to accept any evidence that those beliefs are wrong...
hmmm least the isekai guy and the MC are in a more actual rival like situation, heck the isekai guy probably even understands what the MC is doing with that reflection for example. It's just that its stupidly hard to do in practice, good to see we won't get a super jealous guy who becomes a total dick later on.