How many movies have Kei Ohashi and Kyoko Kotani collaborated on?

They have worked on 3 movies together! Their first movie together was Mobile Suit Gundam 00 The Movie: -A Wakening of the Trailblazer- (2010) while their highest rated movie together was Space Brothers: Number Zero (2014). They have not worked together since Space Brothers: Number Zero (2014). They are most known for their science fiction films together.