How many movies have Ken Obata and Yukari Saka collaborated on?

They have worked on 2 movies together! Their first movie together was Magical Girl Lyrical Nanoha: Detonation (2018) while their highest rated movie together was SHIROBAKO the Movie (2020). They have not worked together since SHIROBAKO the Movie (2020).

SHIROBAKO the Movie (2020)

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Key Animation
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Key Animation

Magical Girl Lyrical Nanoha: Detonation (2018)

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Animation Director
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Key Animation
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Key Animation