I'm very concerned with the uke, it feels like he would judge his own worth by how much a man needs him. if he didn't meet the seme(while he's not great but at least he's good to the uke) at the shop he would probably eventually meet someone else and be in a very toxic or abusive relationship since the uke has very low self-esteem.
I pity charlie but at the same time i hate that he could get out from his misrable situation sooner but he chose not to just because he fell in love with a fucking snake. The root of his situations is just from his stupid decisions. Same with hyungdo but when he knew that thing would be way worst, he chose to stop it and take a way out even though it's came with a heavy price but he knew this was the consequence. In the end it's about "play stupid games win stupid prizes"
I have to comment that the eldest aunt is truly two peas in a pod with first uncle, they both cheat on each other also I remember in the novel(idk if I'm right) the aunt was once being serviced (y'know) in one of the mall that sunyang owns it was disgusting.