How many movies have Mitsuru Ishihara and Seiji Kishimoto collaborated on?

They have worked on 3 movies together! Their first movie together was Slayers Return (1996) while their highest rated movie together was Space Battleship Yamato 2199: Odyssey of the Celestial Ark (2014). They have not worked together since Space Battleship Yamato 2199: Odyssey of the Celestial Ark (2014). They are most known for their animation films together.