How many movies have Rina Akiyama and Toshihiko Seki acted in together?

They have worked on 13 movies together! Their first movie together was Crayon Shin-chan Midsummer Night: I Have Arrived! The Storm is Called Den-O vs. Shin-O! 60 Minute Special!! (2007) while their highest rated movie together was Kamen Rider Den-O & Kiva: Climax Deka (2008). They have not worked together since Kamen Rider × Super Sentai: Super Hero Wars (2012). They are most known for their action films together.