How many movies have Koki Mitani and Takashi Fujii collaborated on?

They have worked on 4 movies together! Their first movie together was Jekyll & Hyde & Tears & Liquor (2014) while their highest rated movie together was 劇場の灯を消すな！PARCO劇場編 (2020). They have not worked together since 劇場の灯を消すな！PARCO劇場編 (2020).