I can't say I hate his brother! But I'm sure I don't like the MC's character! That kind of ' don't, no, stop! Then ok, fine' character! If he's gonna say no, then stick to it. He's character is quite 'marysue'! Lee juyul is like that because first, they had a fuc*** up family. Second he always condone his brother. Lastly, he endures everything for the sake of familial ties. They are all at fault.
Lee juyul's character is much more likable although he's very toxic now. Like lost wolf cub.