How many movies have Michio Mihara and Tensai Okamura collaborated on?

They have worked on 6 movies together! Their first movie together was Urusei Yatsura: Always My Darling (1991) while their highest rated movie together was Ninja Scroll (1993). They have not worked together since Naruto the Movie: Legend of the Stone of Gelel (2005). They are most known for their animation films together.