How many movies have Akio Otsuka and Koji Tsujitani acted in together?

They have worked on 4 movies together! Their first movie together was Otaku no Video (1991) while their highest rated movie together was Inuyasha the Movie 3: Swords of an Honorable Ruler (2003). They have not worked together since Inuyasha the Movie 3: Swords of an Honorable Ruler (2003). They are most known for their animation films together.