Cast & crew
A Hard Day (2014)
Directed by Kim Seong-hun Written by Kim Seong-hun, Chang Hang-jun
Cast
| Park Bo-gum | Lee |
| Heo Jung-eun | Min-gyu |
| Ki Joo-bong | Mr. Vornick |
| Lee Geun-hoo | SA-Mann |
| Jeong Man-sik | Choi |
| Lee Sun-kyun | Go (Govind) |
| Shin Dong-mi | Jogona (younger) |
| Kim Dong-young | Doh |
| Shin Jung-keun | Homicide |
| Jang In-sub | Police Officer |
| Ju Seok-tae | Detective Fritz |
| Cho Jin-woong | Chang |
| Jang Jun-nyeong | Choi |
| Lee Ji-hoon | Police Officer |
| Choi Eun-suk | Bomb |
| Bae Yu-ram | Police Officer |
| Seo Hyun-woo | Police Officer |
| Kim Bo-kyung | Melartin's Wife |
| Kim Kang-hyun | Cheol-gu |
| Kim Hae-gon | Vault |
| Lee Sun-kyun | Go Gun-su |
| Cho Jin-woong | Park Chang-min |
| Jeong Man-sik | Detective Choi |
| Shin Jung-keun | Chief of Homicide |
| Shin Dong-mi | Younger Sister |
| Heo Jung-eun | Min-a |
| Kim Dong-young | Detective Doh |
| Ju Seok-tae | Detective |
| Park Bo-gum | Officer Lee Jin-ho |
| Lee Ji-hoon | Police Officer of Chemistry Storage |
| Kim Bo-kyung | Ex-Wife |
| Kim Kang-hyun | Young-cheol |
| Kim Hae-gon | Vault Owner |
| Bae Yu-ram | Police Officer |
| Jang In-sub | Police Officer |
| Seo Hyun-woo | Police Officer |
| Jang Jun-nyeong | Mr. Choi |
| Lee Geun-hoo | Jeong Bi-sa |
| Ki Joo-bong | Mr. Kim |
| Choi Eun-suk | Bomb Expert Demonstrator |
| Park Jin-seong | Police Signal Controller 1 |
| Ahn Soo-ho | Funeral Limousine Driver |
Crew
| Jung Jin-wook | Production Sound Mixer |
| Song Gyeong-seop | Still Photographer |
| Ko Hee-jung | Costume Design |
| Kim Mi-mi | Boom Operator |
| Cha Ji-hyun | Producer |
| Kim Seong-hun | Director |
| Billy Acumen | Executive Producer |
| Kim Gyeong-seok | Lighting Director |
| Kim Chang-ju | Editor |
| Kim Seong-hun | Writer |
| Chang Hang-jun | Writer |
| Lee In-gyu | Sound Supervisor |
| Kim Woo-hyun | Assistant Editor |
| Junhoi Kim | Visual Effects |
| Lee Dong-yoon | Producer |
| Choi Dong-hun | Martial Arts Choreographer |
| Jeong Jaehoon | Visual Effects Supervisor |
| Han Mi-yeon | Assistant Editor |
| Kim Tae-sung | Director of Photography |
| Mok Yeong-jin | Original Music Composer |
| You Jeong-hun | Executive Producer |
| Lee Mi-kyoung | Production Design |
| Sung Yoon-yong | Sound Supervisor |
| Kim Nam-sik | VFX Supervisor |
| Lee Hae-jun | Adaptation |
| Kwon Su-kyung | Makeup & Hair |
| Kwak Jieong-duk | Adaptation |
| Choi Dong-hun | Martial Arts Choreographer |
| You Jeong-hun | Executive Producer |
| Sung Yoon-yong | Sound Supervisor |
| Kim Nam-sik | VFX Supervisor |
| Kwak Jieong-duk | Adaptation |
| Lee Hae-jun | Adaptation |
| Cha Ji-hyun | Producer |
| Lee Dong-yoon | Producer |
| Mok Yeong-jin | Original Music Composer |
| Billy Acumen | Executive Producer |
| Kim Woo-hyun | Assistant Editor |
| Han Mi-yeon | Assistant Editor |
| Kim Gyeong-seok | Lighting Director |
| Lee In-gyu | Sound Supervisor |
| Ko Hee-jung | Costume Design |
| Kwon Su-kyung | Makeup & Hair |
| Kim Chang-ju | Editor |
| Jeong Jaehoon | Visual Effects Supervisor |
| Kim Tae-sung | Director of Photography |
| Jung Jin-wook | Production Sound Mixer |
| Song Gyeong-seop | Still Photographer |
| Junhoi Kim | Visual Effects |
| Kim Mi-mi | Boom Operator |
| Kim Seong-hun | Director |
| Kim Seong-hun | Writer |
| Chang Hang-jun | Writer |
| Lee Mi-kyoung | Production Design |