How many movies have Koichi Miura and Koichi Sonoi collaborated on?

They have worked on 8 movies together! Their first movie together was 10 Years - A Wife's Betrayal (2004) while their highest rated movie together was Onihei Crime Files: Unibrow (2007). They have not worked together since Onihei Crime Files: Sutegoro Takahagi (2010). They are most known for their drama films together.