How many movies have Akio Jissoji and Junkichi Ôki collaborated on?

They have worked on 5 movies together! Their first movie together was The Men Who Made Ultraman (1989) while their highest rated movie together was Ultra Q The Movie: Legend of the Stars (1990). They have not worked together since Akio Jissoji's Museum of Wonders - Volume of Discourse (1992). They are most known for their horror films together.