How many movies have Kiyoko Yamamoto and Toshiatsu Kôzuma collaborated on?

They have worked on 5 movies together! Their first movie together was Memories (1997) while their highest rated movie together was Gibo no onanii: Hatsujô roshutsu (1997). They have not worked together since Men's Nightless Castle (1998). They are most known for their drama films together.