| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Kim Mi-joo | Crew | Creator | Creator | |
Gae-mi | Crew | Sound | Original Music Composer | 12 |
Park Bo-ram | Crew | Directing | Director | 12 |
Lee Seul-gi | Crew | Creator | Creator | |
 Lee Dae-yeon | Cast | Actor | Baek Jun-shik | 12 |
 Kim Hye-ok | Cast | Actress | Park Young-shin | 12 |
 Hwang Jeong-min | Cast | Actress | 'Turtle' supermarket owner | 1 |
 Jo Young-jin | Cast | Actor | Lee Jin-chul | 12 |
 Woo Jung-kook | Cast | Actor | Cho Hyun-gil | 3 |
 Kim Nam-gil | Cast | Actor | Song Ha-young | 12 |
 Jeong Man-sik | Cast | Actor | Park Dae-woong | 4 |
 Lee Si-young | Cast | Actress | Neighborhood single mother | 1 |
 Kim Won-hae | Cast | Actor | Heo Gil-pyo | 12 |
 Kim Hyun | Cast | Actress | Hwa-yeon's mother | 3 |
 Kim So-jin | Cast | Actress | Yoon Tae-goo | 12 |
 Jin Sun-kyu | Cast | Actor | Kook Young-soo | 12 |
 Oh Seung-hoon | Cast | Actor | Jo Kang-moo | 2 |
 Ko Gun-han | Cast | Actor | Yang Yong-chul | 2 |
 Oh Hee-jun | Cast | Actor | Kang Yoo-min | 2 |
 Son Young-soon | Cast | Actress | Lee Chun-young | 2 |
 Ku Sung-hwan | Cast | Actor | Hwang Dae-sun | 1 |
 Lee Ha-nui | Cast | Actor | Im Moo-sik | 12 |
 Na Chul | Cast | Actor | Woo Ho-sung | 3 |
 Park Jin-young | Cast | Actor | Doctor | 1 |
 Kim Bong-soo | Cast | Actor | Ji-sook's father | 1 |
 Jeong Sun-won | Cast | Actor | Nam Il-young | 12 |
 Yoon Hye-ree | Cast | Actress | Choi Hwa-yeon | 2 |
 Kim Joong-hee | Cast | Actor | Nam Ki-tae | 5 |
 Oh Kyung-joo | Cast | Actor | Bang Ki-hoon | 2 |
 Choi Sol-hee | Cast | Actress | Yang Ji-sook | 2 |
 Lee Jong-yoon | Cast | Actor | Jang Deuk-hok | 1 |
 Ryeoun | Cast | Actor | Jung Woo-joo | 12 |
Lee Geun-hu | Cast | Actor | Kwak Man-hyun | 1 |
 Han Jun-woo | Cast | Actor | Gu Young-chun | 5 |
 Jung Chung-gu | Cast | Actor | Film developer | 1 |
 Seo Dong-gab | Cast | Actor | Kim Bong-shik | 12 |
 Han Dae-gwan | Cast | Actor | Victim's father | 1 |
 Moon Dong-hyeok | Cast | Actor | Moon Tae-soo | 3 |
 Choi Nam-wook | Cast | Actor | Convenience store owner | 1 |
 Yoo Yong | Cast | Actor | Detective | 1 |
 Bae Seong-il | Cast | Actor | Detective | 1 |
 Lee Jae-eun | Cast | Actress | Mrs. Kim | 1 |
 Kim Borana | Cast | Actress | Massage parlor owner | 1 |
 Kim Joo-ah | Cast | Actress | Columbarium employee | 1 |
 Kim Gyeong-min | Cast | Actor | Professor An | 2 |
 Kim Deok-ju | Cast | Actress | Hwa-yeon's landlord | 1 |
 Choi Da-young | Cast | Actress | Nurse | 1 |
 Hong Ye-ji | Cast | Actress | Bookstore employee | 1 |
 Hong Woo-jin | Cast | Actor | Oh In-tak | 12 |
 Kong Seong-ha | Cast | Actress | Choi Yoon-ji | 12 |
 Kim Yun-seul | Cast | Actress | Cotton candy girl | 1 |
 Lee Hun-joo | Cast | Actress | Soo-hyun's mother | 2 |
 Noh Ha-yeon | Cast | Actress | Lee Soo-hyun | 2 |
 Park Yu-mil | Cast | Actress | Lim Hyun-joo | 1 |
 Lee Cheon-mu | Cast | Actor | Song Ha-young (young) | 2 |
 Hwang In-jun | Cast | Actor | Detective | 1 |
 Sun Yul-woo | Cast | Actor | Detective | 5 |
 Oh Kyu-taek | Cast | Actor | Man drinking with prosecutor | 1 |
 Seo Myung-chan | Cast | Actor | Han Seok-hoon | 1 |
 Lee Ki-seop | Cast | Actor | Kang Jin-goo | 1 |
 Hong Eun-jeong | Cast | Actress | Manyeon bus stop woman | 1 |
 Lee Jae-woo | Cast | Actor | Detective Kim | 1 |
 Cheon Dong-been | Cast | Actor | Deliveryman | 1 |
 Seong No-jin | Cast | Actor | Forensics examiner | 2 |
| Person | Type | Job | Role(s) | Episodes |
