How many movies have Ryuuhou Ookawa and Yuuichi Mizusawa collaborated on?

They have worked on 13 movies together! Their first movie together was Hermes - Winds of Love (1997) while their highest rated movie together was Beautiful Lure: A Modern Tale of Painted Skin (2021). They have not worked together since The Cherry Bushido (2022). They are most known for their animation films together.