How many movies have Ryusei Nakao and Takashi Yanase collaborated on?

They have worked on 18 movies together! Their first movie together was Go! Anpanman: Baikinman's Counterattack (1990) while their highest rated movie together was Go! Anpanman: Revive Banana Island! (2012). They have not worked together since Go! Anpanman: Roboly and the Warming Present (2023). They are most known for their animation films together.