How many movies have Masaki Hiramatsu and Yuichi Terao collaborated on?

They have worked on 8 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 The Garden of Sinners: Future Gospel (2013). They are most known for their animation films together.