 | Lim Soo-jung als Su-mi |
 | Moon Geun-young als Su-yeon |
 | Yum Jung-ah als Eun-joo |
 | Kim Kap-soo als Moo-hyeon |
 | Park Mi-hyun als Birth Mother |
 | Lee Seung-bi als Mi-hee |
 | Woo Ki-hong als Sun-kyu |
 | Lee Dae-yeon als Doctor |
| Choi Jae-won | Executive Producer |
| Oh Ki-min | Producer |
| Oh Jung-wan | Producer |
| Lee Mo-gae | Director of Photography |
| Lee Byung-woo | Original Music Composer |
| Kim Jee-woon | Director |
| Kim Jee-woon | Screenplay |
| Kim Jung-hwa | Producer |
| Ko Im-pyo | Editor |
| Choi Tae-young | Sound Supervisor |
| Kim Do-hee | Makeup & Hair |
| Cho Keun-hyun | Production Design |
| Choi Sun-ok | Costume Design |
| Lee So-yeong | Assistant Director |
| Lee In-gyu | Sound Designer |
| Oh Seung-chul | Lighting Director |
| Kang Kyeong-han | Sound Supervisor |
| Kim Kyung-tae | Production Sound Mixer |
| Jeon Ro-bin | Props |
| Gang Chang-gil | Set Decoration |
