Director
Screenwriter
Main Role
- Ahn Hyo SeopKoo Yeon Jun | Nam Si HeonMain Role
- Jeon Yeo BeenHan Jun Hee | Kwon Min JuMain Role
- Kang HoonJung In KyuMain Role
Support Role
- Seo Ye HwaSeo Na Eun [Jun Hee 's friend]Support Role
- Lee Min GooKwon Do Hun [Min Ju's brother]Support Role
- Jang Hye JinBae Mi Yeong [Min Ju's mother]Support Role
- Park Hyuk KwonBae Chi Won [Min Ju's maternal uncle]Support Role
- Min Jin WoongOh Chan Yeong | Oh Chan HeeSupport Role
- Oh YongDong Jun [Noksan High School homeroom teacher]Support Role
- Yoon Sang JungSung Hye Mi [Noksan High School student]Support Role
- Han Ji WonLee Su Jin [Noksan High School student]Support Role
- Song Ji WooByun Da Hyeon [Noksan High School student]Support Role
- Kim Yi KyeongPark Ji Hee [Noksan High School student]Support Role
- Baek Sung ChulSe Kwon [Detective]Support Role
- Kim Chul YoonBum Sun [Detective]Support Role
- Lee Joo ShilGye Sun [In Kyu's grandmother]Support Role
- Jang Youn JeongJi Yong Seon [Noksan High School student]Support Role
Guest Role
- Hwang Soo Min[Anchor] (Ep. 1)Guest Role
- Kim Si Kook[Silver Lining employee] (Ep. 1)Guest Role
- Kim Hee ChangByung Ryul [Silver Lining employee] (Ep. 1)Guest Role
- Kim Jae Cheol[Noksan High School chemistry teacher] (Ep. 1)Guest Role
- Lee Rang SeoSeul Ki [Silver Lining employee] (Ep. 1-2)Guest Role
- Jang Se HyunSang Ho [Silver Lining employee] (Ep. 1-2, 4)Guest Role
- Lee Ji HaSoo Kyung [Yeon Jun's mother] (Ep. 1, 7-8)Guest Role
- Lee Na RaKoo In Yeong [Yeon Jun's sister] (Ep. 1, 7-8)Guest Role
- Ahn Jong Jin[Silver Lining employee] (Ep. 2)Guest Role
- Sung Ki YoonKwon Sang Jo [Min Ju's father] (Ep. 2)Guest Role
- Im Tae PoongJung In Kyu [Young] (Ep. 2)Guest Role
- Kim Ji WooNam Si Heon [Young] (Ep. 2)Guest Role
- Kwon Hyuk Soo[Doctor] (Ep. 3)Guest Role
- Lee Joong Yul[Bus driver] (Ep. 3)Guest Role
- Park Ki WoongChoi Myung Il [Doctor] (Ep. 4)Guest Role
- Jung Soo HanSeung Ho [Noksan High School student] (Ep. 4)Guest Role
- Hong Suk Bin[Noksan High School Vice-principal] (Ep. 5)Guest Role
- Kim Deok Ju[Jun Hee’s grandmother] (Ep. 5)Guest Role
- Ahn Chae Heum[Jun Hee’s friend] (Ep. 5)Guest Role
- Park Jun Hyuk[Middle school student] (Ep. 5)Guest Role
- Jung Seo YeonHan Jun Hee [Young] (Ep. 5, 9)Guest Role
- Kang Myung JooMi Sun [Si Heon's mother] (Ep. 6, 9)Guest Role
- Jung Hyun Woo[Doctor] (Ep. 7)Guest Role
- Lee Dong Kyu[Anchor] (Ep. 7)Guest Role
- Kim Won Seok[Prison guard] (Ep. 7)Guest Role
- Kim Byeo Ri[Hotel receptionist] (Ep. 7)Guest Role
- RowoonTae Ha [Yeon Jun's crush] (Ep. 8)Guest Role
- Do Sang WooPark Do Hyeon [Jun Hee's senior] (Ep. 8)Guest Role
- Kwon Ha Young[Waitress] (Ep. 8)Guest Role
- Park Seung Tae[Elderly pedestrian] (Ep. 8)Guest Role
- Nam Jung Woo[Restaurant manager] (Ep. 8)Guest Role
- Jung Han Bit[Do Hyeon's girlfriend] (Ep. 8)Guest Role
- Choi Se in[Crying restaurant girl] (Ep. 8)Guest Role
- Kim Tae JungPark Min Sang [Noksan High School student]Guest Role
- Lee Joo Young[Blind date student] (Ep. 8, 10)Guest Role
- Jung Ji Hyun[Blind date student] (Ep. 8, 10)Guest Role
- Noh Hyun Seok[Blind date student] (Ep. 8, 10)Guest Role
- Yoon Jin Seong[Chan Yeong's mother] (Ep. 10)Guest Role
- Kim Seo JunOh Chan Yeong [Young] (Ep. 10)Guest Role
- Oh Min Jung[Chan Hee's caregiver] (Ep. 10)Guest Role
- Hwang Jae YeolKi Won [Detective] (Ep. 10)Guest Role
- Jung Doo WonYoon Ho [Detective] (Ep. 10-11)Guest Role
- Kim Jae Man[Photo studio owner] (Ep. 11)Guest Role
- Kim Joo Hwang[Electronics repairman] (Ep. 11-12)Guest Role
- Oh Kyung JooChang Joo (Ep. 12)Guest Role
- Park Hee JungYoon Mi (Ep. 12)Guest Role
- Kim Kyung MinKang Jung Woo [Noksan High School student] (Ep. 7)Guest Role
- Do Ye JoonSeo Hyeon Uk [Noksan High School student] (Ep. 5)Guest Role
- Lee Si On[Crying Boy] (Ep. 8)Guest Role
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