How many movies have Hideki Oka and Yoshinobu Nishizaki collaborated on?

They have worked on 12 movies together! Their first movie together was Space Battleship Yamato 2202: Warriors of Love - Ch. 1 (2017) while their highest rated movie together was Space Battleship Yamato 2202: Warriors of Love - Ch. 3 (2017). They are most known for their science fiction films together.