How many movies have Keiji Ishihara and Soichiro Matsuda collaborated on?

They have worked on 5 movies together! Their first movie together was Slayers Gorgeous (1998) while their highest rated movie together was Puella Magi Madoka Magica the Movie Part III: Rebellion (2013). They have not worked together since Puella Magi Madoka Magica the Movie Part III: Rebellion (2013). They are most known for their animation films together.