How many movies have Bunta Tani and Ikunosuke Koizumi acted in together?

They have worked on 7 movies together! Their first movie together was Akasen Honmoku chabuya no onna (1975) while their highest rated movie together was A Woman Called Sada Abe (1975). They have not worked together since Rape Frenzy: Five Minutes Before Graduation (1977).