How many movies have Koji Shiraishi and Yuuka Tanaka collaborated on?

They have worked on 2 movies together! Their first movie together was Senritsu Kaiki File Kowasugi! Preface: True Story of the Ghost of Yotsuya (2014) while their highest rated movie together was Seishun Gunjyoiro no Natsu (2015). They have not worked together since Seishun Gunjyoiro no Natsu (2015).