| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Kim Jung-sik | Crew | Directing | Director | 1 |
 Kim Hye-young | Crew | Writing | Writer | 1 |
 Kim Koo-taek | Cast | Actor | Interviewer | 1 |
 Kim Jung-eun | Cast | Actress | Geum Ju | 1 |
 Shin Min-a | Cast | Actress | Son Hae-young | 12 |
 Kim Hee-chang | Cast | Actor | Lee Ji-Hun | 1 |
 Kim Sun-young | Cast | Actress | Um So-Hye | 1 |
 Jeong Eun-gyeong | Cast | Actress | Orphanage director | 1 |
 Lee You-jin | Cast | Actor | Yeo Ha-joon | 12 |
 Park Se-wan | Cast | Actress | Jung Su-a | 1 |
 Kim Hae-sook | Cast | Actress | Geum Deok | 1 |
 Lee Sang-yi | Cast | Actor | Bok Gyu-hyeon | 12 |
 Kim Young-dae | Cast | Actor | Kim Ji-uk | 12 |
 Jeon Hye-won | Cast | Actress | Kwon Yi-lin | 12 |
 Joo Min-kyung | Cast | Actress | Cha Hui Seong [Hae Yeong's friend] | 12 |
 Song You-hyun | Cast | Actress | Kang Bit-Na | 1 |
 Lee Dong-hyeon | Cast | Actor | Convenience store customer | 2 |
 Kim Bong-soo | Cast | Actor | Recycler | 1 |
 Byeon Woo-seok | Cast | Actor | U Seok | 1 |
 Go Wook | Cast | Actor | An Woo-jae | 12 |
 Lee Jung-ok | Cast | Actor | Nam Gil | 1 |
 Kim Ki-doo | Cast | Actor | PE teacher | 1 |
Son Soo-ah | Cast | Wedding shop staff | 1 | |
 Kim Dae-geun | Cast | Actor | Rat catcher's customer | 1 |
 Jang Yong-bok | Cast | Actor | Gym member | 1 |
 Ahn Chan-woong | Cast | Actor | Employee | 1 |
Na Ho-won | Cast | Actor | Bus driver | 1 |
 Han Ji-hyun | Cast | Actress | Nam Ja-yeon | 12 |
 Kim Seong-yong | Cast | Actor | Executive | 1 |
 Lee Jae-eun | Cast | Actress | Gi Won’s mom | 1 |
 Kim Joo-ah | Cast | Actress | I Rin's mom | 1 |
 Choi Da-young | Cast | Actress | Nurse | 1 |
 Han Kyu-won | Cast | Actor | Si Ho’s dad | 1 |
 Park Soo-jin | Cast | Actress | Manager | 1 |
 Park Yu-mil | Cast | Actress | High school teacher | 1 |
 Kim Yong-myung | Cast | Actor | Store manager | 1 |
 Shin Kang-kyun | Cast | Actor | Recycler | 2 |
| Person | Type | Job | Role(s) | Episodes |
