Park Hyung-Sik
Does he lose weight? I can see his cheek bone, when he smile there's obvious deep wrinkles around his eyes. His baggy cloths, some part he acted childish. He's probably just acting cute, but he's a surgeon, did he forget his actual character that none of surgeon ever act cute? He's mischaracteristic his part. While Park Shin-Hye didn't make a better impression either (why did she flip her hair so much?).

Holding hand scene
Sigh....seriously though. They're not in High School anymore. 2 adults who acted like kindergarten first love, especially when they're both medical doctors who know so much about human anatomy and biology, why should they acted squeamish, petrified than simply shy. Although they both adults (not young anymore) first time in love, their acting was barely.

SYSTEM IN KOREA
I don't understand the system in Korea. Is that true that doctor can get pay cuts easily? A Professor can bully and scream on top of his lung humiliating intern just like that? 2nd ML got no patients because of....(he wasn't in tik-tok?), administer drugs to patient in operating room without knowledge from the anesthesiologist? Is it really hard to find job as a doctor in Korea?

It's a bad directive, not good acting, too much fillers, this drama can be finished by 10 ep top.