How many movies have Jiro Okamoto and Naoki Nagase collaborated on?

They have worked on 5 movies together! Their first movie together was Kamen Rider Kabuto: God Speed Love (2006) while their highest rated movie together was Farewell Kamen Rider Den-O: Final Countdown (2008). They have not worked together since Super Kamen Rider Den-O Trilogy - Episode Yellow: Treasure de End Pirates (2010). They are most known for their adventure films together.