How many movies have Akari Hibino and Shuichi Ikeda acted in together?

They have worked on 4 movies together! Their first movie together was Project A-Ko (1986) while their highest rated movie together was Project A-Ko 3: Cinderella Rhapsody (1988). They have not worked together since Project A-Ko 4: Final (1989). They are most known for their science fiction films together.