How many movies have Kazuo Ikehiro and Susumu Ono collaborated on?

They have worked on 7 movies together! Their first movie together was Lowly Ronin (1981) 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.