JiSung is killing me

How can wearing a white coat be so freaking damn hot? The story is getting well and everything but I just can't stop myself fangirling JiSung.

On a serious note, YoHan is a really mysterious character in this series. He can't feel pain, he can diagnose disease just by looking at a patient and he had this case for administering euthanasia. Who is he really? And what is he thinking? Why did he act like that towards ShiYeong? There's so many unanswered questions and I hope the next episodes would be able to shed light to my curiosities.