How many movies have Koichi Sakamoto and Rikako Sakata collaborated on?

They have worked on 5 movies together! Their first movie together was Kamen Rider x Kamen Rider Fourze & OOO Movie Wars Mega Max (2011) while their highest rated movie together was Kamen Rider Fourze: Climax Episode (2012). They have not worked together since Kamen Rider Fourze: FINAL EPISODE (2013). They are most known for their science fiction films together.