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Park Jeongmin as Hak-soo |
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김고은 as Sun-mi |
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장항선 as Hak-soo's Father |
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고준 as Yong-dae |
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신현빈 as Mi-kyung |
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Jeong Gyu-su as Sun-mi's Father |
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김준한 as Won-joon |
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정선철 as Joong-sik |
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배제기 as Sang-ryul |
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이정현 as Alumni |
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신문성 as Police Officer |
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임성재 as Hak-gi |
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백현진 as Bang-baek |
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Kim Se-gyeom as Patient |
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배영란 as Hye-ok |
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Choi Jung-hun as Goo-bok |
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유영빈 as Rapper |
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송덕호 as Rapper |
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이승훈 as Gold Medal |
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박수연 as Student |
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조하석 as Teacher |
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하현수 as Classmate |
| Crew | Shin Young-hoon | Martial Arts Choreographer |
| Visual Effects | 정재훈 | VFX Supervisor |
| Editing | 이혜민 | Colorist |
| Art | 김남호 | Set Decoration |
| Art | 유청 | Props |
| Visual Effects | Huh Dong-hyuck | VFX Supervisor |
| Directing | 이준익 | Director |
| Sound | 최태영 | Sound Supervisor |
| Writing | Kim Se-gyeom | Writer |
| Editing | Kim Jung-hoon | Editor |
| Sound | Bang Jun-seok | Original Music Composer |
| Camera | Lee Eui-tae | Director of Photography |
| Art | 이재성 | Production Design |
| Costume & Make-Up | 조태희 | Makeup & Hair |
| Production | Sean Kim | Producer |
| Production | Kim Jin-sun | Executive Producer |
| Costume & Make-Up | Choi Mi-yeon | Costume Design |
| Sound | 백현진 | Original Music Composer |
| Sound | Chung Min-joo | Dialogue Editor |
| Lighting | Yoo Huck-jun | Lighting Director |
| Camera | 민성애 | Still Photographer |
| Sound | 김유진 | Boom Operator |
| Sound | 김용구 | Production Sound Mixer |
| Camera | 정귀호 | Camera Operator |
| Art | 안덕진 | Art Direction |
| Crew | 정택호 | Stunts |
| Camera | 김창회 | Grip |
