How many movies have Hiroshi Shidara and Masaki Tsuji collaborated on?

They have worked on 3 movies together! Their first movie together was Spooky Kitaro (1968) while their highest rated movie together was Tiger Mask: War Against the League of Masked Wrestlers (1970). They have not worked together since World Famous Fairy Tale Series (1975). They are most known for their animation films together.