How many movies have Eiji Gō and Ryōji Hayama acted in together?

They have worked on 15 movies together! Their first movie together was Blood-Red Water in the Channel (1961) while their highest rated movie together was Outlaw: Heartless (1968). They have not worked together since The Executioner II: Karate Inferno (1974). They are most known for their crime films together.