How many movies have Fumiko Kon and Mamiko Nakanishi collaborated on?

They have worked on 3 movies together! Their first movie together was Bleach the Movie: Memories of Nobody (2006) while their highest rated movie together was Donten: Laughing Under the Clouds - Gaiden: Chapter 2 - The Tragedy of Fuuma Ninja Tribe (2018). They have not worked together since Laid-Back Camp the Movie (2022). They are most known for their animation films together.