How many movies have Mitsuru Ishihara and Tsuguhiko Kadokawa collaborated on?

They have worked on 3 movies together! Their first movie together was Slayers: The Motion Picture (1995) while their highest rated movie together was Martian Successor Nadesico: The Motion Picture - Prince of Darkness (1998). They have not worked together since Martian Successor Nadesico: The Motion Picture - Prince of Darkness (1998). They are most known for their animation films together.