Cast & crew
Voices (2007)
Directed by Oh Ki-hwan Written by Lee Shin-ae, Lee Hyo-Chul, Oh Ki-hwan
Cast
| Yoon Jin-seo | Kim Ga-in |
| Lee Ki-woo | Hyung-joong |
| Park Ki-woong | Hong Seok-min |
| Kim Min-kyung | Ji Seon-mo |
| Yeon Je-wook | Choi Sang-gyeong |
| Jeong Yu-mi | Lee Myeong-hee |
| Kim So-eun | Kim Ga-yun |
| Jung In-gi | Detective Jo |
| Ahn Shin-woo | Hong Jae-sun |
| Kim Jin-geun | Hwang Dae-yong |
| Kim Do-yeon | Kim Mi-joo |
| Ahn Nae-sang | Ga-in's Teacher |
| Jeong Wook | Hyung-joong's Father |
| Kim So-eun | Kim Ga-geon |
| Oh Yeon-seo | Chung Eun-gyeong |
| Jeon Kuk-hwan | Ji-sun's Father |
| Baek Joo-hee | Hyung-joong's Mother |
| Lee Kan-hee | Ga-in's Mother |
| Jo Yeon-hee | Kim Ji-sun |
| Seo Yu-jeong | Ga-in's Youngest Aunt |
| Ham Yu-seon | Sang-kyung |
| Kim Soo-woong | Adult Relative |
| Park Seoung-tae | Dae-yong's Mother |
| Lee Sae-byeol | Visitor |
| Kang Lee-seok | Young Park Hyun-joong |
| Park Shin-woo | Ending Student |
Crew
| Lee Shin-ae | Writer |
| Lee Hyo-Chul | Writer |
| Oh Ki-hwan | Screenplay |
| Oh Ki-hwan | Director |
| Kim Jun-seok | Musician |
| Lee Seung-yeop | Sound |
| Kang Kyung-ok | Comic Book |
| Jung Se-rin | Musician |
| Oh Ki-hwan | Producer |
| Kim Sun-min | Editor |
| Jung Jang-hwan | Assistant Director |
| Yang Gil-yeong | Fight Choreographer |
| Jang Jin | Makeup & Hair |
| Shin Dong-sun | Adaptation |
| Jung Jang-hwan | Adaptation |
| Kim Yong-heung | Director of Photography |
| Kang Min-woo | Assistant Director |
| Yang Min-hye | Costume Design |
| Seo Seung-eok | Stunts |