How many movies have Seiji Matsuda and Yuki Yamaguchi collaborated on?

They have worked on 8 movies together! Their first movie together was The Garden of Sinners: Oblivion Recording (2008) while their highest rated movie together was Tales of Zestiria: The Shepherd's Advent (2014). They have not worked together since Fate/stay night: Heaven's Feel II. Lost Butterfly (2019). They are most known for their animation films together.