How many movies have Kwon Woo-sung and Ryu Deok-hwan collaborated on?

They have worked on 1 movie together! Their first movie together was Yobi, The Five-Tailed Fox (2007) and was their highest rated movie together. They have not worked together since Yobi, The Five-Tailed Fox (2007).

Crew
Executive Producer
Role
Hwang Geum-ee (voice)