How many movies have Kenji Kuroyanagi and Masahiro Okamura collaborated on?

They have worked on 4 movies together! Their first movie together was Plastic Little: The Adventures of Captain Tita (1994) while their highest rated movie together was Zatch Bell! Attack of Mechavulcan (2005). They have not worked together since Zatch Bell! Attack of Mechavulcan (2005). They are most known for their animation films together.