How many movies have Shuichi Ito and Yoshitaka Yashima collaborated on?

They have worked on 5 movies together! Their first movie together was Interstella 5555: The 5tory of the 5ecret 5tar 5ystem (2003) and was their highest rated movie together. They have not worked together since One Piece Film: Strong World (2009). They are most known for their adventure films together.

One Piece Film: Strong World (2009)

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Yes! Precure 5 Go Go! Movie: Happy Birthday in the Land of Sweets (2008)

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Yes! Precure 5: The Great Miracle Adventure in the Country of Mirrors (2007)

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One Piece: Giant Mecha Soldier of Karakuri Castle (2006)

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Interstella 5555: The 5tory of the 5ecret 5tar 5ystem (2003)

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