How many movies have Hitoshi Haga and Shinya Takahashi collaborated on?

They have worked on 3 movies together! Their first movie together was Darkside Blues (1994) while their highest rated movie together was Perfect Blue (1998). They have not worked together since Hutch the Honeybee (2010). They are most known for their animation films together.

Hutch the Honeybee (2010)

Crew
Key Animation
Crew
Supervising Animation Director

Perfect Blue (1998)

Crew
Key Animation
Crew
Key Animation

Darkside Blues (1994)

Crew
Key Animation
Crew
Animation Director
Crew
Mechanical Designer