How many movies have Jun Ōsugi and Seishirō Hara acted in together?

They have worked on 12 movies together! Their first movie together was Akado Suzunosuke: Dokuro dentaiji (1958) while their highest rated movie together was Samurai Vendetta (1959). They have not worked together since Zatoichi Meets the One-Armed Swordsman (1971).