How many movies have Hirohiko Kakegawa and Kappei Yamaguchi acted in together?

They have worked on 6 movies together! Their first movie together was Chibi Maruko-chan (1990) while their highest rated movie together was Chibi Maruko-chan: My Favorite Song (1992). They have not worked together since One Piece: Stampede (2019). They are most known for their animation films together.