How many movies have Akira Ishida and Jun Kumagai collaborated on?

They have worked on 4 movies together! Their first movie together was PERSONA3 THE MOVIE #1 Spring of Birth (2013) while their highest rated movie together was PERSONA3 THE MOVIE #4 Winter of Rebirth (2016). They have not worked together since PERSONA3 THE MOVIE #4 Winter of Rebirth (2016). They are most known for their science fiction films together.