How many movies have Daisuke Watanabe and Shinobu Goto collaborated on?

They have worked on 4 movies together! Their first movie together was Takumi-kun Series: The Rainbow-Colored Glass (2009) while their highest rated movie together was Takumi-kun Series: Details of Beauty (2010). They have not worked together since Takumi-kun Series: That, Sunny Blue Sky (2011).