| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Lee Kang | Crew | Writing | Writer | 12 |
 Song Min-yeop | Crew | Directing | Director, Creator | 12 |
Park Se-jun | Crew | Sound | Music | 12 |
 Park Cheol-min | Cast | Actor | Choi Byeong-geol | 12 |
 Lee Hwang-eui | Cast | Actor | Han Seok-joong | 12 |
 Jeong Ji-an | Cast | Actress | Bus attendant | 1 |
 Oh Man-seok | Cast | Actor | Hwang Gi-nam | 12 |
 Jung Hee-tae | Cast | Actor | Kim Kyung-soo (adult) | 2 |
 Kim Won-hae | Cast | Actor | Kim Hyeon-cheol | 12 |
 Choi Won-young | Cast | Actor | Hwang Hee-tae (adult) | 1 |
 Jin Yong-uk | Cast | Actor | Hyun-chul | 1 |
 Hwang Young-hee | Cast | Actress | Choi Soon-nyeo | 12 |
 Heo Jeong-do | Cast | Actor | Lee Gyeong-pil | 12 |
 Kim Hyun | Cast | Actress | Lee siblings' aunt | 1 |
 Gwag Ja-hyeong | Cast | Actor | Sang-gon | 1 |
 Joo Bo-young | Cast | Actress | Park Seon-min | 12 |
 Sim Yi-young | Cast | Actress | Song Hae-ryeong | 12 |
 Uhm Hyo-seop | Cast | Actor | Lee Chang-geun | 12 |
 Choi Moon-soo | Cast | Actress | Suk-joong's Wife | 12 |
 Yoo Soon-woong | Cast | Actor | Priest | 2 |
 Han Sa-myeong | Cast | Actor | Won-seok | 1 |
 Yun Seung-hun | Cast | Actor | Paramedic | 2 |
 Geum Sae-rok | Cast | Actress | Lee Soo-ryeon | 12 |
 Lee Kyu-sung | Cast | Actor | Jung Hye-geon | 12 |
 Park Eun-young | Cast | Actress | Sung-wook's mother | 1 |
 Go Min-si | Cast | Actress | Kim Myeong-hee | 12 |
 Lee Sang-yi | Cast | Actor | Lee Soo-chan | 12 |
 Choi Seung-hoon | Cast | Actor | Hwang Jung-tae | 12 |
 Kwon Eun-bin | Cast | Actress | Yu-jin | 1 |
 Park Se-hyun | Cast | Actress | Lee Jin-ah | 12 |
 Lee Do-hyun | Cast | Actor | Hwang Hee-tae | 12 |
 Kim Nam-jin | Cast | Actress | Orphanage nun | 1 |
 Kwon Ji-woo | Cast | Actor | Kim Kyung-soo | 12 |
 Kim Cheol-yun | Cast | Actor | Sang-min | 1 |
 Gu Bon-jin | Cast | Actor | Hospital executive | 1 |
 Kim Eun-soo | Cast | Actor | Lee Kwang-gu | 12 |
 Choi Nam-wook | Cast | Actor | Taxi driver | 1 |
 Kim Yi-kyeong | Cast | Actress | Oh In-young | 12 |
 Bae Seong-il | Cast | Actor | Police chief | 1 |
 Park Yong | Cast | Actor | Byun Sung-soo | 1 |
 Choi Yi-sun | Cast | Actor | Soo-chan's co-worker | 2 |
 Kim Ju-yeon | Cast | Actress | Nurse | 1 |
 Kim Bo-jeong | Cast | Actress | Kim Min-ju | 12 |
 Jung Wook-jin | Cast | Actor | Choi Jung-haeng | 12 |
 Rho Sang-bo | Cast | Actor | Hong Sang-pyo | 12 |
 Lee Jae-woo | Cast | Actor | Ki-nam's guy | 1 |
 Gu Da-song | Cast | Actress | Bo-yeon | 2 |
 Kwon Hyuk-hyun | Cast | Actor | Lee In-jae | 1 |
 Jo Yi-hyun | Cast | Actor | Kim Myung-soo | 12 |
 Sung Ki-yoon | Cast | Actor | Hwang Jung-tae (adult) | 1 |
 Jang Won-hyuk | Cast | Actor | Yoo Byeong-cheol | 12 |
 Nam Do-yoon | Cast | Actor | Student | 1 |
 Jang Tae-min | Cast | Actor | Ambulance driver | 1 |
 Jang Do-ha | Cast | Actor | Lee Seo-on | 1 |
 Jeon Jun-woo | Cast | Actor | Soo-chan's employee | 2 |
 Cha Sang-mi | Cast | Actress | Maid in Hee-tae's Home | 12 |
 Kim In-sun | Cast | Actress | Jang Suk-chul | 12 |
 Oh Kyu-taek | Cast | Actor | Used car dealer | 1 |
 Jo Ji-hyeon | Cast | Actress | Bus station employee | 1 |
 Hong Eun-jeong | Cast | Actress | Jung-tae's secretary | 1 |
 Seong No-jin | Cast | Actor | Kim Myung-soo (adult) | 1 |
| Person | Type | Job | Role(s) | Episodes |
