How many movies have Chikao Ohtsuka and Kazuhiko Hitano collaborated on?

They have worked on 3 movies together! Their first movie together was Fist of the North Star: The Legend of Yuria (2007) while their highest rated movie together was Fist of the North Star: The Legend of Toki (2008). They have not worked together since Fist of the North Star: The Legend of Toki (2008). They are most known for their action films together.