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Seo In-guk as Jo Won-il |
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이종석 as Jung Woo-sang |
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Kwon Yuri as Jung-eun |
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Park Cheol-min as Jae-seok |
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박정철 as Coach Jang |
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Yoon Kyun-sang as Yoon Gyun-sang |
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Shin Min-chul as Jung-dong |
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김재영 as Dae-Chan |
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Sunwoo Jae-duk as Woo-sang's Father |
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조아영 as Se-mi |
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Jeon Bo-mi as Ha-na |
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Lee Chang-joo as Woo-hyeon |
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Park Yong-sik as President of the Association |
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Kim Young-sun as Woo-sang's Mother |
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Yang Joon-hyeok as Yang Joon-hyeok |
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김정학 as Reporter Han |
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Kim Won-hyo as Key Man |
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오인혜 as Female Coach |
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남다름 as Young Jung Woo-sang |
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Yu Seung-yong as Young Jo Won-il |
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Park Hyun-woo as Jo Min-guk |
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Ahn Jang-hyeok as Prologue Commentator |
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남도형 as Prologue Announcer |
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Kim Ri-won as Reporter 2 |
| Directing | Cho Yong-sun | Director |
| Crew | 김철준 | Martial Arts Choreographer |
| Sound | Lee Yun-jae | Production Sound Mixer |
| Lighting | Park Jun-gyu | Lighting Director |
| Art | Lee Ah-young | Art Direction |
| Production | Park Se-jun | Co-Producer |
| Writing | Yu Young-ah | Writer |
| Writing | Cho Yong-sun | Writer |
| Editing | 허선미 | Editor |
| Camera | Kim Hak-su | Camera Operator |
| Art | Kim Yu-mi | Production Design |
| Production | Park Chang-hyun | Producer |
