How many movies have Haruki Koketsu and Tatsushi Ōmori collaborated on?

They have worked on 2 movies together! Their first movie together was Tada's Do-It-All House (2011) while their highest rated movie together was When My Mom Died, I Wanted to Eat Her Ashes (2019). They have not worked together since When My Mom Died, I Wanted to Eat Her Ashes (2019).