How many movies have Kazuhiko Kasai and Sôhei Hasegawa collaborated on?

They have worked on 26 movies together! Their first movie together was Tora-san Meets the Songstress Again (1975) while their highest rated movie together was Tora-san Plays Daddy (1987). They have not worked together since Tora-san's Salad-Day Memorial (1988). They are most known for their comedy films together.