How many movies have Chiaki Furuzumi and Ikue Otani collaborated on?

They have worked on 5 movies together! Their first movie together was Detective Conan: Jolly Roger in the Deep Azure (2007) while their highest rated movie together was Detective Conan: The Raven Chaser (2009). They have not worked together since Detective Conan: Quarter of Silence (2011). They are most known for their animation films together.