How many movies have Houko Kuwashima and Mitsuru Ishihara collaborated on?

They have worked on 4 movies together! Their first movie together was Martian Successor Nadesico: The Motion Picture - Prince of Darkness (1998) while their highest rated movie together was Space Battleship Yamato 2199: Odyssey of the Celestial Ark (2014). They have not worked together since Mobile Suit Gundam SEED FREEDOM (2024). They are most known for their drama films together.