How many movies have Hiroyuki Ishizaka and Yuki Morinaga collaborated on?

They have worked on 4 movies together! Their first movie together was The Liar and His Lover (2013) while their highest rated movie together was Chihayafuru: Part III (2018). They have not worked together since Chihayafuru: Part III (2018). They are most known for their romance films together.