How many movies have Emi Chiba and Keita Shimizu collaborated on?

They have worked on 5 movies together! Their first movie together was The Garden of Sinners: Oblivion Recording (2008) while their highest rated movie together was The Garden of Sinners: A Study in Murder (Part 2) (2009). They have not worked together since Pompo the Cinephile (2021). They are most known for their animation films together.