How many movies have Mai Watanabe and Moe Oosaki acted in together?

They have worked on 3 movies together! Their first movie together was Sailor Moon - The Advent of Princess Kakyuu - The Second Stage Final (2004) and was their highest rated movie together. They have not worked together since Sailor Moon - New Legend of Kaguya Island (Revision) - Marinamoon Final (2005). They are most known for their fantasy films together.