How many movies have Hiroki Matsumoto and Kouichi Motomura collaborated on?

They have worked on 4 movies together! Their first movie together was The Garden of Sinners: Overlooking View (2007) while their highest rated movie together was The Garden of Sinners: Paradox Spiral (2008). They have not worked together since Love Me, Love Me Not (2020). They are most known for their animation films together.