Haesol didn't want to change Yeonwoo's physical appearance or attitude/personality. She wants to help him change his mindset and be more confident about himself like Chunga. Y'all should stop being dumb and read into the story more. I have a love and hate relationship with Haesol but I believe she really does wants the best for Yeonwoo. I misunderstood her, i feel bad~
Poor Big Head He's upset about his name lmaooooo