How many movies have Shinji Otsuka and Shunsuke Hirota collaborated on?

They have worked on 9 movies together! Their first movie together was Howl's Moving Castle (2004) and was their highest rated movie together. They have not worked together since Okko's Inn (2018). They are most known for their animation films together.

Okko's Inn (2018)

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Key Animation
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Animation Director

The Boy and the Beast (2015)

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Key Animation
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Key Animation

When Marnie Was There (2014)

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Key Animation
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Key Animation

The Tale of The Princess Kaguya (2013)

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Animation
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Animation

The Wind Rises (2013)

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Key Animation
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Key Animation

From Up on Poppy Hill (2011)

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Key Animation
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Animation Director

Ponyo (2008)

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Key Animation
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Key Animation

Tales from Earthsea (2006)

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Key Animation
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Key Animation

Howl's Moving Castle (2004)

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Key Animation
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Animation