How many movies have Kouichi Arai and Takashi Mukouda collaborated on?

They have worked on 9 movies together! Their first movie together was One Piece: Baron Omatsuri and the Secret Island (2005) while their highest rated movie together was Summer Wars (2009). They have not worked together since Giovanni's Island (2014). They are most known for their animation films together.

Giovanni's Island (2014)

Crew
Key Animation
Crew
Key Animation

Rainbow Fireflies (2012)

Crew
Key Animation
Crew
Key Animation

A Letter to Momo (2012)

Crew
Key Animation
Crew
Key Animation

Legend of the Millennium Dragon (2011)

Crew
Key Animation
Crew
Key Animation

Summer Wars (2009)

Crew
Key Animation
Crew
Key Animation

The Sky Crawlers (2008)

Crew
Key Animation
Crew
Key Animation

Naruto the Movie: Legend of the Stone of Gelel (2005)

Crew
Storyboard Artist
Crew
Key Animation
Crew
Key Animation

Fullmetal Alchemist the Movie: Conqueror of Shamballa (2005)

Crew
Key Animation
Crew
Key Animation

One Piece: Baron Omatsuri and the Secret Island (2005)

Crew
Key Animation
Crew
Key Animation