I get that hyesung has had his share of problems and he is still young and everything but he just gives up on taking care of byul every other chapter. Plus he still acts like a bratty tsundere towards dojin even now (from time to time). I mean, he has had a character development but it isn't much compared what they have gone through as a family. In my opinion there should have been a greater development in his character by now... Just my pov tho.
I get that hyesung has had his share of problems and he is still young and everything but he just gives up on taking care of byul every other chapter. Plus he still acts like a bratty tsundere towards dojin even now (from time to time). I mean, he has had a character development but it isn't much compared what they have gone through as a family. In my opinion there should have been a greater development in his character by now...
Just my pov tho.