How many movies have Haruka Namiji and Mototsugu Watanabe collaborated on?

They have worked on 4 movies together! Their first movie together was Sexy S.W.A.T. Team (1998) while their highest rated movie together was Silence of the Sushi Rolls (2001). They have not worked together since Kamitteru kaikan: Zetchô uneri-biraki (2019).