In Good Doctor, episode 2, Park Si On(played by Joo Won) and Cha Yoon Seo(played by Moon Chae Won) seemed to have a thing.
Si On was down after getting scolded by Kim Do Han(played by Joo Sang Wook) for carrying out an operation without any permission and orders.
As he got kicked out of the doctors’ accommodation, Yoon Seo was the only one who cared for him. She cooked for him and became good friends with him not to make him feel left alone.
Si On also confessed, “Your face with a moonlight on was so pretty.”