@OniQueen
Pretty realistic though.
I have no comment about the novel of this webtoon popularity but I can say that they're all a lot of novels that focus on the main character or couple and because they make the love seem so justifiable, gorgeous and all-encompassing the characters that experience plight due to the main characters' love are overshadowed by the world-tipping romance of the MCs...
This is probably a case of that and not alot of readers realise this sometimes.
I'm pretty much like this MC (Ash) though, I read to a certain degree of the book or novel to see how things turn out for the side characters that may have experienced negativity due to the MCs' love pursuit, in many cases I've dropped novels due to characters being mistreated for no reason but being nice to one of the MCs and the other one being jealous of upset with that so the person is literally punished or smthn (in a specific case regarding a certain novel which I will never forget was a situation in which the guy's whole field of medicine was burnt down simply because he was being nice to the female lead time and time again he never crossed any lines, he understood the boundaries and didn't pester her yet that's what happened... that was his living...)