How many movies have Ken Obata and Yukiko Miyamoto collaborated on?

They have worked on 2 movies together! Their first movie together was Magical Girl Lyrical Nanoha: Detonation (2018) while their highest rated movie together was Goblin Slayer -Goblin's Crown- (2020). They have not worked together since Goblin Slayer -Goblin's Crown- (2020).