How many movies have Akira Yamakawa and Tsuyoshi Nakatani collaborated on?

They have worked on 4 movies together! Their first movie together was Napping Princess (2017) while their highest rated movie together was Is It Wrong to Try to Pick Up Girls in a Dungeon?: Arrow of the Orion (2019). They have not worked together since Ride Your Wave (2019). They are most known for their fantasy films together.