Everything? Only the art style was good for me honestly. When I read this kind of manhwa I'm expecting mature characters which they obviously aren't. Another thing that i hate the most is when the author can't decide if they are gonna make the character show interest for the other or not. (English is not my first language so I would have to write it in Portuguese to make you understand better.

What a boring manhwa. I had high expectations since everyone always recommends this one but it's another disappointment