How many movies have Akio Otsuka and Tsutomu Isobe acted in together?

They have worked on 4 movies together! Their first movie together was Mobile Suit Gundam MS IGLOO 2: Gravity of the Battlefront (2008) while their highest rated movie together was Uchuu Sentai Kyuranger: Episode of Stinger (2017). They have not worked together since One Piece: Stampede (2019). They are most known for their action films together.