How many movies have Koji Kikkawa and Naoko Kouda acted in together?

They have worked on 2 movies together! Their first movie together was Kamen Rider × Kamen Rider OOO & W Featuring Skull: Movie Wars Core (2010) while their highest rated movie together was Fuuto PI: The Portrait of Kamen Rider Skull (2024). They have not worked together since Fuuto PI: The Portrait of Kamen Rider Skull (2024).