How many movies have Masaya Saito and Tomokazu Seki collaborated on?

They have worked on 4 movies together! Their first movie together was Psycho-Pass: Sinners of the System - Case.1 Crime and Punishment (2019) while their highest rated movie together was Jujutsu Kaisen 0 (2021). They have not worked together since Jujutsu Kaisen 0 (2021). They are most known for their animation films together.