How many movies have Hiroyuki Watanabe and Junichi Tozawa collaborated on?

They have worked on 3 movies together! Their first movie together was Gamera: Guardian of the Universe (1995) while their highest rated movie together was Gamera 2: Attack of Legion (1996). They have not worked together since Gamera 3: Revenge of Iris (1999). They are most known for their science fiction films together.