I think Yi Hyeon's handsome(▰˘◡˘▰) But I agree he looks like a teenager XD And it's ridiculous whenever he goes some guy is hitting on him. Being aware it's an omegaverse story, more absurds don't even surprise me.
As I wade through the novel I notice his insights.. relatable? coherent? And he has many actually, but as it was stated he isn't good with words. He used his art to communicate instead. And he stopped paiting not bc he didn't have anything to say, but bc "he couldn't be honest with himself any longer" and he "wanted to hide".
It's a shame the manhwa's failing to portray it up to now, but it's just 23th chapter ╮( ̄▽ ̄)╭
If you wish to check it out, I wrote some quotations in my topic "stripes and others" (long forgotten by now). I don't write very often so you can easily find it through my profile.

The art is pretty, the ML is hot, and the story seems to be going in a good direction but I'm probably still dropping. The MC is just very boring and the stereotypical timid, naive, and quiet MC that Korean writers love writing. Also the audacity to create a very generic omega character but you then write that everyone around them could have sworn they were an Alpha. These authors really play on peoples intelligence because they know the average BL reader has none. :/ Also im completely over the boring blank character having everyone around them being attracted to them. I thought we were over the bella swan characters a log time ago. Author if you want me to believe everyone has the hots for the MC then actually make them attractive and give them an interesting personality.
Also the combination of his timidness, his physical build, and the clothes he wears just makes him come off as a child. Like im suppose to believe he's in his 20s but everything he does is giving preteen at most.