How many movies have Masatoshi Kai and Yuuko Sugiyama collaborated on?

They have worked on 4 movies together! Their first movie together was Ghost in the Shell 2: Innocence (2004) while their highest rated movie together was Goblin Slayer: Goblin's Crown (2020). They have not worked together since Mobile Suit Gundam Hathaway (2021). They are most known for their animation films together.