How many movies have Mayu Watanabe and Yasushi Akimoto collaborated on?

They have worked on 9 movies together! Their first movie together was AKB48 Request Hour Setlist Best 100 2008 (2008) while their highest rated movie together was Maeda Atsuko's Tearjerking Graduation Announcement in Saitama Super Arena (2012). They have not worked together since Sashihara Rino Graduation Concert 〜Sayonara Sashihara Rino〜 (2019). They are most known for their music films together.