How many movies have Satoshi Dezaki and Yuuki Nakajima collaborated on?

They have worked on 7 movies together! Their first movie together was Riki-Oh: The Wall of Hell (1989) while their highest rated movie together was Happy Birthday: The Time When Life Shines (1999). They have not worked together since Paul Rusch: His Life and Dream (2002). They are most known for their animation films together.