How many movies have Koichi Yamadera and Tsukasa Abe collaborated on?

They have worked on 3 movies together! Their first movie together was Nadia: The Secret of Blue Water - Nautilus Story I (1991) while their highest rated movie together was Go! Anpanman: The Secret of Tsumiki Castle (1992). They have not worked together since Go! Anpanman: When the Flower of Courage opens (1999). They are most known for their animation films together.