How many movies have Hiroyuki Aoyama and Tomohiko Ito collaborated on?

They have worked on 3 movies together! Their first movie together was The Girl Who Leapt Through Time (2006) and was their highest rated movie together. They have not worked together since Summer Wars (2009). They are most known for their animation films together.

Summer Wars (2009)

Crew
Animation Director
Crew
Assistant Director
Crew
Key Animation

The Piano Forest (2007)

Crew
Animation Director
Crew
Second Unit First Assistant Director

The Girl Who Leapt Through Time (2006)

Crew
Animation Director
Crew
Assistant Director