How many movies have Isamu Tanonaka and Kazuko Sugiyama acted in together?

They have worked on 4 movies together! Their first movie together was The Fantastic Adventures of Unico (1981) and was their highest rated movie together. They have not worked together since Dr. Slump and Arale-chan: Hoyoyo! The Treasure of Nanaba Castle (1984). They are most known for their animation films together.