Cinematography
Director
Music Editor
Screenwriter
Main Role
- Yeom Jung Ah Main Role
- Lee Tae Ran Main Role
- Yoon Se Ah Main Role
- Oh Na Ra Main Role
- Kim Seo Hyung Main Role
Support Role
- Jung Joon HoKang Joon Sang [Orthopedics professor]Support Role
- Choi Won YoungHwang Chi Young [Neurosurgery professor]Support Role
- Kim Byung ChulCha Min Hyeok [Law professor]Support Role
- Jo Jae YoonWoo Yang Woo [Orthopedics professor]Support Role
- Kim Hye YoonKang Ye SeoSupport Role
- Lee Ji WonKang Ye BinSupport Role
- ChaniHwang Woo JooSupport Role
- Kim Dong HeeCha Seo Jun [1st twin]Support Role
- Cho Byeong KyuCha Ki Jun [2nd twin]Support Role
- Park You NaCha Se RiSupport Role
- Lee Yoo JinWoo Soo HanSupport Role
- Kim Bo RaKim Hye NaSupport Role
- Lee Hyun JinTeacher Jo Tae JoonSupport Role
- Jung Ae RiMadam YoonSupport Role
- Song Min HyungDirector Choi [University hospital]Support Role
- Kim Jung NanLee Myung JooSupport Role
- Song Geon HeePark Young JaeSupport Role
- Yoo Sung JooPark Soo ChangSupport Role
- Lee Yeon SooKim Eun Hye [Hye Na's mom]Support Role
- Kwon Hwa WoonLee Choong Sun [Orthopedic resident]Support Role
- Lee Seung YeonLawyer Hong [Woo Joo’s counsel]Support Role
- Yoo YeonLaura JungSupport Role
- Lee Tae GooLee Tae Woo [Neurosurgery resident]Support Role
- Lee Chang HoonChoi Dong Seok [Detective]Support Role
- Lee Joo AhnLee Dong Min [Orthopedic resident]Support Role
- Moon Dong HyukMoon Dong Hyuk [Orthopedic resident]Support Role
- Woo Mi Hwa[Do Hoon's mom]Support Role
- Woo Ji HyunJeon Jin Man [Neurosurgery resident]Support Role
- Jang Tae MinTeacher Oh [Director's nephew]Support Role
- Jang Sung YoonHan Seo Jin [Young]Support Role
- Han Sa MyungPark In Kyu [SKY Castle security]Support Role
- Shim Hoon GiDepartment head ImSupport Role
Guest Role
- Lee Yoon Jae[Moderator] (Ep. 1)Guest Role
- Ok Joo Ri[Fish marketer] (Ep. 1)Guest Role
- Lee Chae Kyung[Tutor auction mother] (Ep. 1)Guest Role
- Lee Ju YeonLee Ga Eul [Employee] (Ep. 2)Guest Role
- Im Do Hwa[Herself] (Ep. 3-4)Guest Role
- Woo Jeong WonDr. Min Ja Yeong (Ep. 20)Guest Role
- Kim Seung Hoon[New teacher] (Ep. 20)Guest Role
- Sung Yeo JinKang Young SookGuest Role
- Jo Mi NyeoKatherine / "Kay"Guest Role
- Jang Hee WonLee Soo Im [Young]Guest Role
- Kang Moon KyungKim Hyeok Jae [Assemblyman]Guest Role
- Jung Soo InSong Yeon Doo [Soo Im's student]Guest Role
- Kim Joo RyoungNoh Seon Hye [Seung Hye's older sister]Guest Role
- Richard Kim[Pastor]Guest Role
- Kang Shin Chul[Patient]Guest Role
- Song Min Gyo[Announcer]Guest Role
- Jang Yoo Hwa[English instructor]Guest Role
- Shin Chul Jin[Soo Chang’s cabin elder]Guest Role
- Ha Jin[Hye Na's homeroom teacher]Guest Role
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