How many movies have Hiroshi Sugawara and Yukimi Koyanagi collaborated on?

They have worked on 5 movies together! Their first movie together was The Second Is a Christian (1985) while their highest rated movie together was Shashin Koshien Summer in 0.5 Seconds (2017). They have not worked together since Shashin Koshien Summer in 0.5 Seconds (2017).