How many movies have Naoichiro Sagara and Tsutomu Hanabusa collaborated on?

They have worked on 4 movies together! Their first movie together was Real Girl (2018) while their highest rated movie together was Kakegurui (2019). They have not worked together since Tokyo Revengers 2 Part 2: Bloody Halloween - Final Battle (2023). They are most known for their drama films together.