How many movies have Nagai Seiichi and 渡辺剛太 collaborated on?

They have worked on 1 movie together! Their first movie together was 「Daoko A(nima) HAPPY NEW TOUR 2021」 (2021) and was their highest rated movie together. They have not worked together since 「Daoko A(nima) HAPPY NEW TOUR 2021」 (2021).