How many movies have Hironori Tanaka and Ryota Obana collaborated on?

They have worked on 3 movies together! Their first movie together was Donten: Laughing Under the Clouds - Gaiden: Chapter 2 - The Tragedy of Fuuma Ninja Tribe (2018) while their highest rated movie together was Demon Slayer -Kimetsu no Yaiba- The Movie: Mugen Train (2020). They have not worked together since Hula Fulla Dance (2021). They are most known for their animation films together.