| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Kim Jin-won | Crew | Directing | Director, Creator | 1 |
 Hsin Hui Lin | Crew | Writing | Original Story | 12 |
Chi-Feng Chien | Crew | Writing | Original Story | 12 |
Choi Hyo-bi | Crew | Writing | Writer, Creator | 1 |
 Park Ki-woong | Cast | Actor | Doctor Choi Myung-Il | 1 |
 Kim Hee-chang | Cast | Actor | Byung Ryul | 1 |
 Kim Jae-man | Cast | Actor | Photo studio owner | 1 |
 Lee Ji-ha | Cast | Actress | Soo Kyung | 3 |
 Do Sang-woo | Cast | Park Do-Hyeon | 1 | |
 Ahn Hyo-seop | Cast | Actor | Nam Si-heon / Koo Yeon-jun | 12 |
 Min Jin-woong | Cast | Actor | Oh Chan-yeong | 1 |
 Rowoon | Cast | Actor | Tae Ha | 1 |
 Jeon Yeo-been | Cast | Actress | Kwon Min-ju / Han Jun-hee | 12 |
 Lee Na-ra | Cast | Actress | Koo In-Yeong | 3 |
 Jeong Doo-won | Cast | Actor | Detective Yoon Ho | 2 |
 Oh Min-jeong | Cast | Actress | Chan Hee's caregiver | 1 |
Kim Ji-woo | Cast | Nam Si-Heon [Young] | 1 | |
 Oh Kyung-joo | Cast | Actor | Chang Joo | 1 |
 Hwang Jae-yeol | Cast | Actor | Detective Ki Won | 1 |
 Kang Hoon | Cast | Jung In-gyu | 12 | |
 Jung Seo-yeon | Cast | Actress | Han Jun-Hee [Young] | 2 |
 Seo Ye-hwa | Cast | Actress | Seo Na-eun | 1 |
 Lee Min-goo | Cast | Actor | Kwon Do-hun | 1 |
 Jang Se-hyun | Cast | Actor | Sang Ho | 3 |
 Hong Seok-bin | Cast | Actor | Noksan High School Vice-principal | 1 |
 Lee Rang-seo | Cast | Actress | Seul Ki | 2 |
 Jung Ji-hyeon | Cast | Actress | Blind date student | 2 |
 Kim Won-suk | Cast | Actor | Prison guard | 1 |
 Nam Jeong-woo | Cast | Actor | Restaurant manager | 1 |
 Kim Deok-ju | Cast | Actress | Jun Hee’s grandmother | 1 |
 Park Seoung-tae | Cast | Actress | Elderly pedestrian | 1 |
 Kim Tae-jeong | Cast | Actor | Park Min-Sang | 1 |
 Sung Ki-yoon | Cast | Actor | Kwon Sang-Jo | 1 |
Kim Byeo Ri | Cast | Hotel receptionist | 1 | |
 Kang Myeong-ju | Cast | Actress | Mi Sun | 2 |
| Person | Type | Job | Role(s) | Episodes |
