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| Sooyoung | Yoon Park | Shin Yeon-Woo |
| Han Gang-Hee | Bang Jung-Seok | Bang Yoo-Na |
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| Jeong In-Ji | Kim Sang-Woo |
| Yoon A-Young | Heo Hoon |
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| Kang Da-Hyun | Choi Ha-Yoon |
| Ku Hye-Ri | Oh Yeon-Hee |
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| Han Jung-Ho | Jin Yu-Chan | Yu Ji-Wan | Kim Kyu-Na | Kim Mi-Ryeo |
| Jung Yoon-Do | Yoon Dong-Gu | Han Sol-Yi | Lee Shi-Hyun | Han Sol-Yi's mother |
 |
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| Jo Hye-Sun | Park Chan-Yang |
| Lee Shi-Hyun's mother | Nurse Pyo |
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| Jung Jae-Sung |
| Son Hyeok-Soo |
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| Bang Eun-Hee | Cha Mi-Kyung | Park Young-Woon | Bang Jin-Won | Cha Yu-Joo |
| Nam Hyun-Sook | Hong Soon-Young | General Director Choi | Ku Hye-Ri's manager | Ku Hye-Ri's stylist |
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| Choi Moo-In | Yang Joo-Ho | Kwon Hyuk |
| dean of students | drama director | actor |
