| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Lee Jeong-hyo | Crew | Directing | Director | 9 |
 Nam Hye-seung | Crew | Sound | Music | 9 |
 Kim So-yeon | Crew | Art | Production Design | 9 |
Lee Hyun-mi | Crew | Editing | Editor | 9 |
 Min Song-a | Crew | Writing | Comic Book, Creator | 9 |
 Ko A-sung | Cast | Actress | Ha-yeon | 5 |
 Lee Jin-uk | Cast | Actor | Park In-wook | 5 |
 Kim Sun-young | Cast | Actress | Doona's mom | 1 |
 Yang Se-jong | Cast | Actor | Lee Won-jun | 9 |
 Park Se-wan | Cast | Actress | Choi I-ra | 9 |
 Kim Yu-mi | Cast | Actress | President Ma | 2 |
 Bae Suzy | Cast | Actress | Lee Doona | 9 |
 Lee Na-ra | Cast | Actress | Laboring woman | 1 |
 Kim Min-ho | Cast | Actor | Seo Yun-taek | 9 |
 Kim Do-wan | Cast | Actor | Gu Jeong-hoon | 9 |
 Kim Hyeon-mok | Cast | Actor | Stalker | 1 |
 Joo Yeon-woo | Cast | Actor | Guk Su-jin | 9 |
 Seo Eun-sol | Cast | Actress | Lee Won-young | 1 |
 Ha Young | Cast | Actress | Kim Jin-ju | 9 |
 Lee Chan-hyeong | Cast | Actor | Ji Se-hun | 9 |
 Rian | Cast | Actress | Bit-na | 4 |
 Baek Ji-hye | Cast | Actress | Lee Eun-ju | 9 |
 Lim Seung-soo | Cast | Actor | Jiu-jitsu boy | 1 |
 Simeez | Cast | Actress | Ye-ji | 4 |
 Son Sang-gyu | Cast | Actor | Won-jun's senior | 1 |
