How many movies have Hochu Otsuka and Tomonori Kogawa collaborated on?

They have worked on 3 movies together! Their first movie together was Heavy Metal L-Gaim I: Pentagona Window + Lady Gavlet (1986) while their highest rated movie together was Road to Ninja: Naruto the Movie (2012). They have not worked together since Road to Ninja: Naruto the Movie (2012). They are most known for their action films together.