How many movies have Naoki Kobayashi and Takafumi 'CO-K' Koukei acted in together?

They have worked on 1 movie together! Their first movie together was Ado: THE FIRST WORLD TOUR「Wish」 (2024) and was their highest rated movie together. They have not worked together since Ado: THE FIRST WORLD TOUR「Wish」 (2024).