How many movies have Masahiro Okamura and Tsutomu Shibayama collaborated on?

They have worked on 2 movies together! Their first movie together was Chibi Maruko-chan: My Favorite Song (1992) and was their highest rated movie together. They have not worked together since Licca the Movie: Licca-chan to Yamaneko Hoshi no Tabi (1994).