How many movies have Minami Usui and Shizuo Kurahashi collaborated on?

They have worked on 9 movies together! Their first movie together was The Garden of Sinners: Overlooking View (2007) while their highest rated movie together was Maquia: When the Promised Flower Blooms (2018). They have not worked together since Maquia: When the Promised Flower Blooms (2018). They are most known for their animation films together.