How many movies have Hikari Ono and Nao Takagi acted in together?

They have worked on 6 movies together! Their first movie together was Sailor Moon - Beginning of the New Legend (1998) while their highest rated movie together was Sailor Moon - Final Fight / The Forest of Transylvania (Revision) -The Secret of the Most Powerful Enemy, Dark Cain- (2001). They have not worked together since Sailor Moon - Birth! Princess of Darkness Black Lady (Revision) - The Secret of the Planet Nemesis (2002).