How many movies have Masami Hata and Maya Matsuyama collaborated on?

They have worked on 4 movies together! Their first movie together was A Journey Through Fairyland (1985) while their highest rated movie together was The Tale of Osamu Tezuka: I'm Son-Goku (1989). They have not worked together since Kero Kero Keroppi's Three Musketeers (1991). They are most known for their animation films together.