How many movies have Chishū Ryū and Tsugio Saito collaborated on?

They have worked on 3 movies together! Their first movie together was Tora-san's Cherished Mother (1969) while their highest rated movie together was Tora-san, the Good Samaritan (1971). They have not worked together since Tora-san, the Good Samaritan (1971). They are most known for their comedy films together.