How many movies have Seiji Izumo and Wakafumi Kotama collaborated on?

They have worked on 6 movies together! Their first movie together was Chikan densha: Okumade nozoite (1986) while their highest rated movie together was Molester Train: Beware of Miniskirts (1988). They have not worked together since Molester Train: Beware of Miniskirts (1988).