Responses
In all honesty, it's not Minsoo's fault. He's just a novel character that is being influenced by his author.
If you re-read the story, Minsoo was originally kind, honest and had a good personality. It's the fatso's (dunno his name) jealousy and obsession with Taeyang that transformed him into a "more handsome" version him.
I personally do not picture Minsoo has himself but as a now slim version of the author. Which is a perfect cliché of a virgin / forever alone neet.
Taeyang may be bad but that cunt Minsoo is awful. How low can you go? Obviously quite low. I'm just waiting for the time he and that nasty author join the harem. As retribution