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Jung Jae-young as Kim Sang-nam |
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Yu Seon as Na Joo-won |
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Kang Shin-il as Vice Principal |
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장기범 as Cha Myeong-jae |
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김혜성 as Jang Dae-geun |
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조진웅 as Charles |
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Kim Mi-kyeong as Principal Nun |
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Lee Hyun-woo as Kim Jin-man |
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지일주 as Oh Chul-jin (uncredited) |
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김동영 as Jo Jang-hyuk (uncredited) |
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Son Seung-won as Park Choong-nam (uncredited) |
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김호원 as Goon San High Baseball Team |
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Chan-Hyeong Jo as Choong Joo Sung Sim School Baseball Team, Lee Cheol-Seung |
| Lighting | Kang Dae-hui | Lighting Director |
| Directing | 강우석 | Director |
| Sound | 조영욱 | Music |
| Writing | 신동익 | Adaptation |
| Costume & Make-Up | Jang Jin | Makeup & Hair |
| Art | Lee Tae-hoon | Production Design |
| Writing | Kim Ki-beom | Writer |
| Editing | Ko Im-pyo | Editor |
| Production | Lee Se-ri | Production Manager |
| Visual Effects | 김욱 | VFX Supervisor |
| Art | 허세민 | Props |
| Camera | 김용흥 | Director of Photography |
| Sound | 오세진 | Production Sound Mixer |
