How many movies have Ryunosuke Matsumura and Shutaro Oku collaborated on?

They have worked on 4 movies together! Their first movie together was Blood-C: The Last Mind (2015) while their highest rated movie together was Blood-Club Dolls 1 (2018). They have not worked together since Blood-Club Dolls 2 (2020). They are most known for their action films together.