How many movies have Ken Yamaguchi and Nobuyuki Furuta acted in together?

They have worked on 4 movies together! Their first movie together was The Scarred Man (1986) while their highest rated movie together was Riki-Oh 2: Child of Destruction (1990). They have not worked together since Shin Karate Jigokuhen (1990). They are most known for their animation films together.