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Lee Soo-kyung as Yong-soon |
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최덕문 as Father |
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박근록 as PE Teacher |
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김동영 as Bbak-gyu |
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장햇살 as Moon-hee |
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Choi Chan-sook as Che-yook's Mother |
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김자영 as Moon-hee's Mother |
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Park Chul-min as Chief of School Administration |
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김민재 as Music Teacher |
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Choi Yeo-jin as English Teacher |
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김응수 as Principal |
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Kim Han-na as Athletic Club Senior |
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Kim Ha-yeon as Young Yong-soon |
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김영재 as Birth Mother's Old Love |
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Lee Na-ra as Birth Mother |
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Park Ji-yeon as Art Teacher |
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Jang Hye-jin as Middle-aged Woman |
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Kim Keum-soon as Supermarket Worker |
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나애진 as Athletic Club Member |
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한사명 as New Gym Teacher |
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Woo Yeon-seo as Ethics Teacher |
| Sound | 김동욱 | Original Music Composer |
| Sound | Kim Jung-sook | Production Sound Mixer |
| Writing | 신준 | Writer |
| Directing | 신준 | Director |
| Camera | Kwon Young-il | Director of Photography |
| Editing | 박민선 | Editor |
| Production | Cha Won-chun | Executive Producer |
| Costume & Make-Up | Jang Joo-hee | Costume Design |
| Production | Kim Ji-hye | Producer |
| Sound | Kim Pil-soo | Sound Supervisor |
| Sound | Chung Min-joo | Sound Supervisor |
| Production | 제정주 | Producer |
| Production | 신준 | Co-Producer |
| Production | Kim Soon-mo | Producer |
| Art | 한지선 | Production Design |
| Costume & Make-Up | 김시화 | Makeup & Hair |
| Lighting | 권준령 | Lighting Director |
| Crew | Hong Eui-jeong | Martial Arts Choreographer |
