I think the reason why dislike Minki is because he's such an idiot for an MC. Like can't you realize that your boyfriend has cheated on you sooooo many times like how can you take him back. Even when he said he wouldn't do it anymore in the beginning of the series he still does it all the time and I'm pretty sure Minki knows he does it but just doesn't want the relationship to be over. Like just get over him and be with the other guy that cares for you like OMG you piss me off sooo much Minki.
Minki seems to be codependent. He annoys me the most because he knows he's being cheated on all the time and and is still with Wonho. Sharing is not caring when it comes to sexually transmitted disease.
Every MC in this story annoys the shiz out of me! they are so darn frustrating. But idk why I hate Minki the most out of the 4.