How many movies have Misaki Akutsu and Ryujin Onizuka collaborated on?

They have worked on 31 movies together! Their first movie together was Sealed Video 32: Cursed Living Doll/Tall Man (2017) while their highest rated movie together was Sealed Video 56: Utsuro Boat (2021). They have not worked together since Sealed Video 63: Relics of the Abandoned Inn (2023). They are most known for their horror films together.