How many movies have Kenji Utsumi and Yukio Ebisawa collaborated on?

They have worked on 4 movies together! Their first movie together was Dr. Slump and Arale-chan: Hoyoyo! The Treasure of Nanaba Castle (1984) while their highest rated movie together was Dragon Ball: Curse of the Blood Rubies (1986). They have not worked together since Dragon Ball Z: Lord Slug (1991). They are most known for their animation films together.