How many movies have Kumiko Okae and Ryoichi Sato collaborated on?

They have worked on 7 movies together! Their first movie together was Detective Ushio VS Case Reporter Saeko at the Terminal Station (2008) while their highest rated movie together was Murder Credit - Final Destination Series (2016). They have not worked together since Seiichi Morimura Mystery Special Shuchuchueki Series 37 No Retirement Age (2021). They are most known for their mystery films together.