How many movies have Akio Otsuka and Tsuyoshi Matsubara collaborated on?

They have worked on 1 movie together! Their first movie together was Super Hero Festival: Kamen Rider x Super Sentai Live & Show 2018 (2018) and was their highest rated movie together. They have not worked together since Super Hero Festival: Kamen Rider x Super Sentai Live & Show 2018 (2018).