How many movies have Keiji Kameyama and Shotaro Ishinomori collaborated on?

They have worked on 3 movies together! Their first movie together was Kamen Rider Hibiki The Movie: Hibiki & The Seven War Oni (2005) while their highest rated movie together was Kamen Rider Build The Movie: Be The One (2018). They have not worked together since Kamen Rider Heisei Generations FOREVER (2018). They are most known for their science fiction films together.