How many movies have Ken Baba and Kenji Hachizaki collaborated on?

They have worked on 4 movies together! Their first movie together was Lupin the Third: Farewell to Nostradamus (1995) while their highest rated movie together was Summer Wars (2009). They have not worked together since Summer Wars (2009). They are most known for their animation films together.

Summer Wars (2009)

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Key Animation
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Key Animation

WXIII: Patlabor The Movie 3 (2002)

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Key Animation
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Key Animation

Case Closed: The Fourteenth Target (1998)

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Key Animation
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Key Animation

Lupin the Third: Farewell to Nostradamus (1995)

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Key Animation
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Character Designer
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Animation Director