How many movies have Kazumi Ishihara and Kazuo Ikehiro collaborated on?

They have worked on 4 movies together! Their first movie together was Terminal Station Series - Umbrella of Goodwill (2015) while their highest rated movie together was Murder Credit - Final Destination Series (2016). They have not worked together since Detective Ushio vs. Case Writer Saeko: Last Family (2017). They are most known for their mystery films together.