A former Asian Games record breaker and Olympic tryout, Kim Gwang-su, endures beatings, abuse, and constant ridicule from his swimming coach. To justify this abusive behavior, his coach constantly reminded Gwang-su - this is for your own good.
| Directing | Jung Ji-woo | Director |
| Production | Yeo Jun-young | Executive Producer |
| Production | Jung Ji-woo | Producer |
| Production | Yeo Jun-young | Producer |
| Writing | Jung Ji-woo | Writer |
| Writing | Kim Min-ah | Writer |
| Lighting | Lee Byung-kwan | Lighting Coordinator |
| Editing | Park Min-sun | Editor |
| Costume & Make-Up | Song Jong-hee | Makeup & Hair |
| Camera | Cho Hyoung-rae | Director of Photography |
| Costume & Make-Up | Choi Eui-young | Costume Design |
| Art | Im Seong-mi | Art Direction |
| Production | Yoon Ick-jun | Line Producer |
| Art | Byun Ki-yun | Production Design |
| Sound | Kim Suk-won | Sound |
| Sound | Jeong Hyun-soo | Music |
| Sound | Kwon Hyun-jeong | Music |
| Costume & Make-Up | Lim Eun-young | Makeup & Hair |
| Crew | Park Young-sik | Martial Arts Choreographer |
| Costume & Make-Up | Lee Jong-kyeong | Costume Designer |
| Sound | Jung Jin-wook | Production Sound Mixer |
| Art | Jeon Sung-ho | Set Decoration |
| Crew | Lim Wang-sub | Martial Arts Choreographer |
| Production | Lee Sang-hyun | Producer |
| Visual Effects | Han Tae-jung | VFX Supervisor |
| Sound | Moon Chul-woo | Sound Effects Editor |
