It was shown in the beginning that everything was always given to the other brother. It is already making me feel sad when in the future mc would be left with nothing just by chance that ML would find the twin more suitable for him. I'm know I'm just exaggerating things but I hope things would be better/kinder for the MC.
I'd like to play the idea of hyesung being the mature one. But, that doesn't make his situation any lighter and should have been portrayed or explained properly to byul. At this point just hospitalize hyesung just so they could realize the gravity of their decisions has and learn how to properly respect hyesung because all of these points to being hyesung becoming the blame or being downplayed.