How many movies have Osamu Kobayashi and Tsutomu Shibayama collaborated on?

They have worked on 6 movies together! Their first movie together was There Goes Our Hero (1979) while their highest rated movie together was Makoto-chan (1980). They have not worked together since Tsushima Maru: Goodbye, Okinawa (1982). They are most known for their animation films together.