| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Dalpalan | Crew | Sound | Original Music Composer | 10 |
 Kim Sung-ho | Crew | Directing | Series Director, Director | 10 |
 Park Yong-gi | Crew | Sound | Sound Supervisor | 10 |
Lee Young-lim | Crew | Editing | Editor | 10 |
 Park Young-sik | Crew | Crew | Martial Arts Choreographer | 10 |
Yoon Ji-ryun | Crew | Writing | Writer, Creator | 10 |
Kim Hyung-joo | Crew | Camera | Director of Photography | 10 |
Ko Hee-jung | Crew | Costume & Make-Up | Costume Design | 10 |
Nam Seong-ju | Crew | Art | Set Decoration | 10 |
Hong Myeong-su | Crew | Lighting | Lighting Director | 10 |
Park Yea-ri | Crew | Costume & Make-Up | Makeup & Hair | 10 |
Lee Mi-kyoung | Crew | Art | Production Design | 10 |
Im Ho-sang | Crew | Art | Props | 10 |
Kim Il-kwang | Crew | Editing | Digital Intermediate | 10 |
 Lee Eol | Cast | Actor | Owner of the tailor shop | 1 |
 Lee Ki-young | Cast | Actor | Soo-hyun's father | 1 |
 Yoon Ji-hye | Cast | Actress | Lee Ju-yeong | 2 |
 Yoon Joo-sang | Cast | Actor | Chairman No | 1 |
 Jeong Seok-yong | Cast | Actor | Yoon Yeong-su | 10 |
 Jung Ae-yeun | Cast | Actress | Madam Jung | 10 |
 Lee Je-hoon | Cast | Actor | Cho Sang-gu | 10 |
 Ji Jin-hee | Cast | Actor | Han Jung-woo | 5 |
 Lee Joo-sil | Cast | Actress | Lee Yeong-sun | 1 |
 Lee Moon-sik | Cast | Actor | Park Ju-taek | 10 |
 Yu Seon | Cast | Actress | Kang Eun-jeong | 1 |
 Im Won-hee | Cast | Actor | Oh Hyun-chang | 10 |
 Choi Soo-young | Cast | Actress | Son U-rim | 2 |
 Kwon Soo-hyun | Cast | Actor | Jung Soo-hyun | 1 |
 Han Seo-jin | Cast | Actress | Min-ji | 1 |
 Lee Re | Cast | Actress | Cha Eun-byeol | 1 |
 An Min-young | Cast | Actress | Lee Yeong-sun (young) | 1 |
 Jeong Dong-hwan | Cast | Actor | Kim In-su | 1 |
 Yang Hong-seok | Cast | Actor | Park Jun-yeong | 5 |
 Tang Joon-sang | Cast | Actor | Han Geu-ru | 10 |
 Ha Si-yeon | Cast | Actress | Kim Eun-mi | 1 |
 Lee Min-woong | Cast | Actor | Sang-gu's father | 2 |
 Ahn Ji-ho | Cast | Actor | Han Jung-woo (teen) | 3 |
 Jin Si-won | Cast | Actor | Paramedic | 1 |
 Lee Jae-wook | Cast | Actor | Kim Su-cheol | 4 |
 Hong Jin-gi | Cast | Actor | Kim Seon-u | 1 |
 Park Shin-ah | Cast | Actress | Lee Seon-yeong | 2 |
 Jeong So-ri | Cast | Actress | Nurse Kim | 1 |
 Kang Hak-soo | Cast | Actor | Real estate agent | 1 |
 Lee Jeong-eun | Cast | Actress | Seon-u's mother | 1 |
 Kim Doh-yon | Cast | Actor | Ian Park | 1 |
 Go Yoo-an | Cast | Actor | Abusive boyfriend | 2 |
 Jung Young-ju | Cast | Actress | Oh Mi-ran | 10 |
 Kim Ga-young | Cast | Actress | Eun-jeong's mother | 1 |
 Kang Ae-sim | Cast | Actress | Lee Mi-seon | 1 |
 Choi Ji-su | Cast | Actress | Nurse | 1 |
 Lee Woo-sung | Cast | Actor | Park Cheol-u (young) | 1 |
 Jung Chung-gu | Cast | Actor | Seon-u's father | 1 |
 Kim Cheol-yun | Cast | Actor | Hospital hostage taker | 1 |
 Park Jung-eon | Cast | Actress | Neighborhood mom | 1 |
 Hong Seung-hee | Cast | Actress | Yoon Na-mu | 10 |
 Jang Jae-kwon | Cast | Actor | Golf clubs resident | 1 |
 Oh Ji-young | Cast | Actress | Karaoke bar owner | 1 |
 Shin Soo-oh | Cast | Actor | Kim Yong-u | 1 |
 Kevin Oh | Cast | Actor | Kang Seong-min / Matthew Green | 1 |
 Park Jung-won | Cast | Actress | Kim Su-jin | 3 |
 Jin Yu-chan | Cast | Actor | Cho Sang-gu (young) | 2 |
 Kim Ju-yeon | Cast | Actress | Min Ji-won | 2 |
 Koo Ja-geon | Cast | Actor | Bank security guard | 1 |
 Choi Jung-hwa | Cast | Actress | Kang Mi-hee | 1 |
 Park Seon-a | Cast | Actress | Soo-hyun's mother | 1 |
 Kong Seong-ha | Cast | Actress | Nurse | 1 |
 Shin So-hyeon | Cast | Actress | CU Again cashier | 1 |
Seo Jeong-shik | Cast | Actor | Lim Yeong-geun | 1 |
 Jang Gyeok-su | Cast | Actor | Attorney | 1 |
 Seong No-jin | Cast | Actor | Park Cheol-u | 2 |
| Person | Type | Job | Role(s) | Episodes |
