In Gyo Jin
Jang Yeong Guk [District head]
Support Role
Lee Bong Ryun
Yeo Hwa Jeong [Building owner]
Support Role
Jo Han Chul
Oh Chun Jae / Oh Yoon ['Live Cafe & Pub' owner]
Support Role
Kang Hyung Suk
Choi Eun Chul [Police substation's constable]
Support Role
Kim Young Ok
Kim Gam Ri / "Supervisor Kim"
Support Role
Lee Yong Yi
Lee Ma Ji
Support Role
Shin Shin Ae
Park Suk Ja
Support Role
Cha Chung Hwa
Cho Nam Sook [Chinese restaurant owner]
Support Role
Gong Min Jung
Pyo Mi Seon [Hye Jin's best friend]
Support Role
Kim Min Seo
O Ju Ri [Chun Jae's daughter]
Support Role
Yoon Seok Hyun
Choi Geum Chul [Doo Shik's friend]
Support Role
Kim Joo Yeon
Ham Yun Kyung
Support Role
Kim Sung Bum
Ban Yong Hoon [Community center manager]
Support Role
Ki Eun Yoo
Jang Yi Jun [Young Guk and Hwa Jung's son]
Support Role
Go Do Yeon
Choi Bo Ra [Geum Chul and Yun Kyung's daughter]
Support Role
Hong Ji Hee
Yu Cho Hui [Yeong Guk's first love]
Support Role
Seo Sang Won
Yoon Tae Hwa [Hye Jin's father]
Support Role
Woo Mi Hwa
Lee Myung Shin [Hye Jin's stepmother]
Support Role
Park Ye Young
Wang Ji Won [Writer]
Support Role
Lee Suk Hyeong
Kang Do Ha [Assistant director]
Support Role
Byun Sung Tae
Jun ['DOS' member]
Support Role
Baek Seung
In Woo ['DOS' member]
Support Role

Bae Bo Ram
Ko Yoon Hee (Ep. 1)
Guest Role
Lee Jung Eun
Kim Yeon Ok [Hye Jin's patient] (Ep. 1)
Guest Role
Bae Hae Seon
Lee Min Young [Hye Jin's senior] (Ep. 1)
Guest Role
Lee Jin Hong
[Bank teller] (Ep. 1)
Guest Role
Yoon Dan Bi
[Dental tech] (Ep. 1)
Guest Role
Kim Bong Hui
[Deaf grandmother] (Ep. 1)
Guest Role
Lee Jin Hee
[Hye Jin's mother] (Ep. 1-3)
Guest Role
Shim Hye Yun
Yoon Hye Jin [Young] (Ep. 1-3, 11)
Guest Role
Jin Yong Wook
[Fisherman] (Ep. 1, 9, 11)
Guest Role
Yang Jin Seon
[Market woman] (Ep. 2)
Guest Role
Song Min Jae
Hong Doo Shik [Young] (Ep. 2, 5)
Guest Role
Lee Ho Jae
[Doo Shik's grandfather] (Ep. 2, 10)
Guest Role
Im Sung Mi
Hwang Ji Won [Hye Jin's friend] (Ep. 3)
Guest Role
Hong In Ah
[Hye Jin's friend] (Ep. 3)
Guest Role
Choi Yoo Jin
[Hye Jin's friend] (Ep. 3)
Guest Role
Ryu Ye Ri
[Hye Jin's friend] (Ep. 3, 13)
Guest Role
Kim Jae Man
Kim Min Sub (Ep. 4)
Guest Role
Lee Si Hoon
[Patient] (Ep. 4)
Guest Role
Jo Ji Hyun
[Waitress] (Ep. 4)
Guest Role
Park Chan Kuk
[Police officer] (Ep. 4)
Guest Role
Min Jung Sup
Officer Lee (Ep. 4, 8)
Guest Role
Bae Min Jun
Choi Geum Cheol [Teenager] (Ep. 5)
Guest Role
Kim Gyu Ram
[Student] (Ep. 5)
Guest Role
Park Ok Chool
[Waitress] (Ep. 5)
Guest Role
Lee Hyun Seo
[Pharmacist] (Ep. 5)
Guest Role
Choi Hye Seo
[Classroom child] (Ep. 5)
Guest Role
Moon Sung Hyun
Hong Doo Shik [Teenager] (Ep. 5-6)
Guest Role
Han Seung Won
Gang Wook (Ep. 5, 9-10)
Guest Role
An Seong Won
Hong Du Sik [Young teenager] (Ep. 5, 9-10)
Guest Role
Kim Do Young
[Psychiatrist] (Ep. 5, 9)
Guest Role
Oh Ye Ju
Yoon Hye Jin [Teenager] (Ep. 6)
Guest Role
Yang Seung Won
[Himself] (Ep. 6)
Guest Role
Kim Ji Hyun
Seon A (Ep. 6, 14-15)
Guest Role
Kim Seong In
["The Seashore Grasshopper" crew member] (7-9, 14-15)
Guest Role
Jo Si Yeon
A Ram (Ep. 8)
Guest Role
Kim Jin
Kim Mi Young [Teller] (Ep. 8)
Guest Role
Lee Ki Sub
[Scammer] (Ep. 8)
Guest Role
Park Hee Eun
[Dental clinic patient] (Ep. 8)
Guest Role
Jo Kyun Hyung
[Stalker] (Ep. 8, 10)
Guest Role
Kang Jung Im
Mrs. Joo [Hwa Jung's friend] (Ep. 11)
Guest Role
Ahn Soo Bin
[Jewelry saleswoman] (Ep. 12)
Guest Role
Kim Moon Ho
[Woodworking owner] (Ep. 12)
Guest Role
Kim Oh Bok
[Men's clothing salesman] (Ep. 12)
Guest Role
Kim Dae Gon
[Rotisserie chicken vendor] (Ep. 12)
Guest Role
Moon Ah Ram
[Hye Jin's friend] (Ep. 13)
Guest Role
Oh Eui Shik
Park Jeong U (Ep. 13-15)
Guest Role
Park Mi Hyun
[Cho Hui's mother] (Ep. 14)
Guest Role
Goo Jae Yeon
[Hwa Jung's mother] (Ep. 14)
Guest Role
Kim Hak Seon
Kim Ki Hoon (Ep. 14-15)
Guest Role
Shim Jin Hwa
[Diner] (Ep. 15)
Guest Role
Kim Won Seok
[ovN employee] (Ep. 15)
Guest Role
Kim Hyun
[Gi Hun's wife] (Ep. 15)
Guest Role
Ahn Jong Jin
[YK Asset management staff] (Ep. 15)
Guest Role
Lee Do Yeop
[Gam Ri's son] (Ep. 16)
Guest Role
Kim Han Sol
Ha Rang
Guest Role
Kil Sung Joo
[Staff]
Guest Role