| Credited cast: |
 | Jeong-eun Kim | - | Go Hee-soo |
 | Jun-ho Jeong | - | Kang Woo-jin |
 | Heung-soo Kim | - | Kim Chan-ho |
| Seung-woo Lee | - | Go Sun - Hee-soo's Stepbrother |
| Sun-jae Lee | - | President Go Duk-soo - Hee-soo's grandfather |
 | Bo-ra Geum | - | Park Yuh-sa - Hee-soo's stepmother |
| So-jeong Yun | - | Jang Myung-sook - Woo Jin's mother |
| Eui-Jeong Lee | - | Lee Jae-kyung - Hee-soo's friend |
| Rest of cast listed alphabetically: |
| Seok-jin Ha | - | Suk-jin |
| Jeong-min Heo | - | Jung-min |
| So-yeong Jeong | - | Kim Yoo-mi |
| Han-wi Lee | - | Jo Sil-jang |
 | Cheol-min Park | - | Moon Ki-sa |
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