How many movies have Kei Tomiyama and Masashi Hironaka acted in together?

They have worked on 4 movies together! Their first movie together was Nine (1983) while their highest rated movie together was Legend of the Galactic Heroes: Overture to a New War (1993). They have not worked together since Legend of the Galactic Heroes: Overture to a New War (1993). They are most known for their animation films together.