How many movies have Kyōzō Nagatsuka and Yoshiyuki Okuhara collaborated on?

They have worked on 3 movies together! Their first movie together was Fly Boys, Fly! (1995) and was their highest rated movie together. They have not worked together since Himawari -Okinawa wa Wasurenai, Ano Nichi no Sora o- (2013). They are most known for their drama films together.