How many movies have Naoki Oka and Yukio Chiba collaborated on?

They have worked on 3 movies together! Their first movie together was Uwakizuma: Inran dônôkai (1996) while their highest rated movie together was Targeted Girls’ Dormitory 3: My Senior is a Lesbian (2008). They have not worked together since Targeted Girls’ Dormitory 3: My Senior is a Lesbian (2008).