How many movies have Hiromitsu Kitayama and Tetsuya Sakashita collaborated on?

They have worked on 3 movies together! Their first movie together was Shiritsu Bakaleya Koukou (2012) while their highest rated movie together was Mars: Tada, Kimi wo Aishiteru (2016). They have not worked together since Mars: Tada, Kimi wo Aishiteru (2016). They are most known for their romance films together.