How many movies have Keiko Ninomiya and Koji Tsuji collaborated on?

They have worked on 1 movie together! Their first movie together was Mother and Daughter Lesbians Mom Won't Train Me To Be A Lesbian! Keiko Ninomiya Nozomi Tsukishiro (2018) and was their highest rated movie together. They have not worked together since Mother and Daughter Lesbians Mom Won't Train Me To Be A Lesbian! Keiko Ninomiya Nozomi Tsukishiro (2018).