How many movies have Kaibashira and Koji Shiraishi collaborated on?

They have worked on 2 movies together! Their first movie together was Koji Shiraishi's Never Send Me, Please Vol.2 (2024) while their highest rated movie together was Koji Shiraishi's Never Send Me, Please Vol.1 (2024). They have not worked together since Koji Shiraishi's Never Send Me, Please Vol.1 (2024).