How many movies have Maaya Sakamoto and Saori Onishi acted in together?

They have worked on 2 movies together! Their first movie together was The Garden of Sinners: Future Gospel (2013) while their highest rated movie together was Is It Wrong to Try to Pick Up Girls in a Dungeon?: Arrow of the Orion (2019). They have not worked together since Is It Wrong to Try to Pick Up Girls in a Dungeon?: Arrow of the Orion (2019).