How many movies have Seiji Matsuda and Wataru Matsuoka collaborated on?

They have worked on 9 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 Magical Sisters Yoyo & Nene (2013). They are most known for their animation films together.