How many movies have Hiroshi Fujioka and Shotaro Ishinomori collaborated on?

They have worked on 4 movies together! Their first movie together was All Together! Seven Kamen Riders!! (1976) while their highest rated movie together was Kamen Rider #1 (2016). They have not worked together since Kamen Rider Saber + Kikai Sentai Zenkaiger: Super Hero Chronicles (2021). They are most known for their adventure films together.