How many movies have Takashi Hashimoto and Tatsuya Oka collaborated on?

They have worked on 5 movies together! Their first movie together was Revolutionary Girl Utena: The Adolescence of Utena (1999) while their highest rated movie together was Zatch Bell! Attack of Mechavulcan (2005). They have not worked together since Fireworks (2017). They are most known for their animation films together.

Fireworks (2017)

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Key Animation
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Key Animation

Space Battleship Yamato 2199: Odyssey of the Celestial Ark (2014)

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Key Animation
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Key Animation

Naruto Shippuden the Movie: The Lost Tower (2010)

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Effects Supervisor
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Key Animation

Zatch Bell! Attack of Mechavulcan (2005)

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Key Animation
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Key Animation

Revolutionary Girl Utena: The Adolescence of Utena (1999)

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Key Animation
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Key Animation