How many movies have Hideki Hamasu and Tatsuzo Nishita collaborated on?

They have worked on 7 movies together! Their first movie together was One Piece: Baron Omatsuri and the Secret Island (2005) while their highest rated movie together was Wolf Children (2012). They have not worked together since Mary and The Witch's Flower (2017). They are most known for their animation films together.

Mary and The Witch's Flower (2017)

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Key Animation
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Key Animation

The Boy and the Beast (2015)

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Key Animation
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Animation Director

The Tale of The Princess Kaguya (2013)

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Animation
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Animation

Wolf Children (2012)

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Key Animation
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Key Animation

A Letter to Momo (2012)

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Key Animation
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Key Animation

Doraemon: Nobita's Dinosaur (2006)

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Key Animation
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Key Animation

One Piece: Baron Omatsuri and the Secret Island (2005)

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Key Animation
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Key Animation