How many movies have Teiji Inayama and Yoshikazu Katō collaborated on?

They have worked on 6 movies together! Their first movie together was Lady in a White Coat: Lewd from the Front and Back (1997) while their highest rated movie together was Gibo no onanii: Hatsujô roshutsu (1997). They have not worked together since Molester and Peeping in the Nunnery Toilet (2000). They are most known for their drama films together.