How many movies have Akihiko Oka and Hiroki Imamura collaborated on?

They have worked on 2 movies together! Their first movie together was Doraemon: Nobita's Chronicle of the Moon Exploration (2019) while their highest rated movie together was Teasing Master Takagi-san: The Movie (2022). They have not worked together since Teasing Master Takagi-san: The Movie (2022).