After watching Park Shin Hye in The Heirs. I felt like she is leading the film and Kim RaeWon was just following her lead. A few romantic scenes was a little awkward to see. Rae Won just look much older then ShinHye. Like she is kissing her brother. Park Shin Hye, to me, look older when her hair. Is long. When she played high school girl, short hair would have been more convincing. Her friend Moon Ji In thought to play her role really well. I don’t know much about the brain surgery, but glad they show the actors actresses spent time scrubbing before enter the operating room.