Composer
Director
Screenwriter
Main Role
- Namkoong Min Main Role
- Bang Min Ah Main Role
- Ohn Joo Wan Main Role
- Seo Hyo RimGong Mi [Shim's sister]Main Role
Support Role
- Oh Hyun KyungJoo Jae Boon [Shim's mother]Support Role
- Woo HyunGong Hyuk [Shim's father]Support Role
- Jung Hye SunNam Soon Cheon [Joon Pyo's grandma]Support Role
- Kyeon Mi RiYeom Tae Hee [Joo Soo's mother]Support Role
- Kim Il WooSuk Dae Hwang [Joo Soo's father]Support Role
- Kim Byung OkYeom Tae Chul [Joon Soo's uncle]Support Role
- Bang Eun HeeCheon Ji Yeon [Dan Tae's aunt]Support Role
- Sunwoo Yong Yeo[Dae Hwang's birth mother]Support Role
- Jo Yeon HoSuk Joon Pyo [Young]Support Role
- Shin Soo HoShin Goo NamSupport Role
- Choi Hong IlAhn Soo Yeong [Dan Tae's father]Support Role
- Kim Byung Se[Law firm president]Support Role
- Geum BoHo JoongSupport Role
- Ahn Soo BinKim Dae Ri [Grimreaper]Support Role
- Go Mi YoungLawyer ChoiSupport Role
- Lee Chae Kyung[Joon Pyo's birth mother]Support Role
Guest Role
- Kim Ho Chang[Gong Shim's friend] (Ep. 8)Guest Role
- An So Jin[Gong Shim's schoolmate] (Ep. 10)Guest Role
- Kim Ji EunKim Ji Ah (Ep. 12)Guest Role
- Jo Hee Bong[Sushi restaurant owner] (Ep. 13)Guest Role
- Joo Seok Tae[Secretary]Guest Role
- Lee Su Ryeon[Workshop instructor]Guest Role
- Kim Gi Cheon[Police officer]Guest Role
- Kim Dong Gyun[Gas station owner]Guest Role
- Kwon Tae Won[Medical staff]Guest Role
- Seo Jin Wook[Doctor]Guest Role
- Park Noh Shik[Cleaning staff]Guest Role
- Jin Hyun Kwang[Photo shop owner]Guest Role
- Han Seo Yeon[Assistant]Guest Role
- Lee Eun MiLawyer SoGuest Role
- Yang Seung Kul[Soo Young's friend]Guest Role
- Kim Jae Il Guest Role
- Kim Mi Ran Guest Role
- Lee Kwan Young[Octopus owner] (Ep. 11)Guest Role
- Ma Min Hee(Ep. 12)Guest Role
- Nam Ri An[Nurse]Guest Role
Unknown
- Na Do Yool Unknown
- Kim Joo Young Unknown
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