| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Yu Jun-sang | Cast | Actor | Hong Gyeongdoo | 18 |
 Jeong Seok-yong | Cast | Actor | Tae Man | 18 |
 Lim Hyung-jun | Cast | Actor | Tae Soo | 18 |
 Lee Jin | Cast | Actress | Lee Seonyoung (Yihyeon's childhood friend / Gitae's wife) | 18 |
 Han Min | Cast | Actor | Park Soochang (Young) | 18 |
 Sung Yu-ri | Cast | Actress | Jeong Yihyeon | 18 |
 Jo Mi-ryung | Cast | Actress | Shim Yeonjeong | 18 |
 Kim So-hyun | Cast | Actress | Jeong Yihyeon (Young) | 18 |
 Kal So-won | Cast | Actress | Hong Haedeum | 18 |
 Kim Young-kwang | Cast | Actor | Park Soochang (Yihyeon's childhood friend) | 18 |
 Son Jong-hak | Cast | Actor | Jeju Island Chief | 18 |
 Kim Kap-soo | Cast | Actor | Choi Gook (Yihyeon's father) | 18 |
 Han Sang-jin | Cast | Actor | Choi Gitae (Seok's eldest son / Seonyoung's husband) | 18 |
 Lee Hyang-sook | Cast | Actress | Lee Seonyoung (Young) | 18 |
 Park Eun-ji | Cast | Actress | Gwangsook | 18 |
 Shin Seung-hwan | Cast | Actor | Jong Tae (Gwangsook's husband) | 18 |
 Ko In-beom | Cast | Actor | Executive Director Lee Jooho | 18 |
 Seo Hyeon-cheol | Cast | Actor | Go Eunpyo | 18 |
 Yoo Hye-ri | Cast | Mrs. Choi (Seok's wife) | 18 | |
 Choi Su-rin | Cast | Actress | Jeong Joogyeom (Yihyeon's mother) | 18 |
 Kim Hye-jin | Cast | Actress | Lee Hyeyoung (Seonyoung's elder sister) | 18 |
 Lee Hyo-jeong | Cast | Actor | Choi Seok (Yihyeon's uncle) | 18 |
 Kim Jung-soo | Cast | Actor | Senior Soo Chang | 18 |
| Person | Type | Job | Role(s) | Episodes |
