How many movies have Masashi Inayoshi and Wakafumi Kotama collaborated on?

They have worked on 6 movies together! Their first movie together was Chikan densha: Ijô sekkin (1987) while their highest rated movie together was Molester Train: Beware of Miniskirts (1988). They have not worked together since Molester Train: One Shot in the Morning (1989). They are most known for their drama films together.