How many movies have Denjirō Ōkōchi and Hiromitsu Karasawa collaborated on?

They have worked on 5 movies together! Their first movie together was Chuji's Travel Diary: The Chuji Patrol Episode (1927) while their highest rated movie together was Ōoka Cases Devil's Image - Part One (1930). They have not worked together since Enoken's Surprising Life (1938).