How many movies have Mizuki Oguro and Tsutomu Ishigaki collaborated on?

They have worked on 6 movies together! Their first movie together was Case Closed: Zero the Enforcer (2018) while their highest rated movie together was Her Blue Sky (2019). They have not worked together since Go! Anpanman: Dororin and the Transformation Carnival (2022). They are most known for their animation films together.