How many movies have Masashi Inayoshi and Seiji Izumo collaborated on?

They have worked on 6 movies together! Their first movie together was Kitamura Mika: Kyonyû enjuku (1988) while their highest rated movie together was Molester Train: Beware of Miniskirts (1988). They have not worked together since Sayaka VS Chiyo-kun: Abnormal Lesbian (1989). They are most known for their drama films together.