Cast & crew
Once in a Summer (2006)
Directed by Joh Keun-shik Written by Lee Suk-yeon, Kim Eun-hee
Cast
| Lee Byung-hun | Yun Suk-young |
| Soo Ae | Seo Jung-in |
| Lee Se-eun | Lee Su-jin |
| Lee Hae-eun | Bok-ja |
| Jeong Seok-yong | Mr. Kim |
| Choi Deok-moon | Suk-young's Senior |
| Na Ki-soo | Suk-young's Father |
| Oh Dal-su | Nam Gyun-soo |
| Yoo Hai-jin | PD Kim |
| Kim Joong-ki | Senior |
| Park Nam-hee | Branch School Principal |
| Park Chae-ik | Literary Society Member |
| Kim Do-kyoon | Literary Society Member |
| Son In-yong | Literary Society Member |
| Kim Jeong-ha | Old Woman |
| Kim Kyeong-ran | Old Woman |
| Choi Ji-yeon | Old Woman |
| Park Chan-guk | Detective |
| Choi Eun-suk | Plainclothes Detective |
Crew
| Joh Keun-shik | Director |
| Hong Seung-chul | Lighting Director |
| Lee Chul-ho | Production Design |
| Lee Suk-yeon | Screenplay |
| Bang Chu-seong | Producer |
| Kim Eun-hee | Writer |
| Lee Hyung-deok | Director of Photography |
| Kim Hyun-jung | Producer |
| Kim Sang-bum | Editor |
| Kim Jae-beom | Editor |
| Kim Mi-young | Editor |
| Kim Byeong-gi | Special Effects Supervisor |
| Lee Sung-jin | Sound Supervisor |
| You Cheong | Set Decoration |
| Lee Seung-chul | Sound Supervisor |
| Kim Jun-seong | Original Music Composer |
| Choi Dae-sung | Production Sound Mixer |
| Shim Hyun-jung | Original Music Composer |
| Yang Min-hye | Costume Design |
| Choi Min-seon | Makeup & Hair |