How many movies have Akio Watanabe and Yota Tsuruoka collaborated on?

They have worked on 6 movies together! Their first movie together was Spriggan (1998) while their highest rated movie together was Kizumonogatari Part 2: Nekketsu (2016). They have not worked together since KIZUMONOGATARI -Koyomi Vamp- (2024). They are most known for their animation films together.