How many movies have Keiko Han and Naoko Takeuchi collaborated on?

They have worked on 6 movies together! Their first movie together was Sailor Moon R: The Movie - The Promise of the Rose (1993) while their highest rated movie together was Pretty Guardian Sailor Moon Special Act: We're Getting Married!！ (2004). They have not worked together since Pretty Guardian Sailor Moon: Act Zero (2005). They are most known for their romance films together.