Why Did I Do That? AZ movies.
| Directing | Im Kwon-taek | Director |
| Writing | Seo Gi-won | Original Story |
| Writing | Lee Eun-seong | Writer |
| Production | Kim Yong-deok | Producer |
| Production | Kim Tae-ho | Executive Producer |
| Camera | Lee Seok-gi | Director of Photography |
| Lighting | Choi lb-chun | Lighting Director |
| Editing | Kim Hui-su | Editor |
| Sound | Sang-gi Han | Music |
| Art | Lee Bong-seon | Production Design |
| Art | U Jong-sam | Props |
| Costume & Make-Up | Lee Hae-yoon | Costume Design |
| Costume & Make-Up | An Kon-ho | Makeup Artist |
| Sound | Kim Sung-chan | Sound Recordist |
| Directing | No Se-han | Assistant Director |
| Production | Cho Yonng-gil | Production Director |