An unknown lifeform who sought out the protagonist. Sophie looks like a creepy plushie, but she insists that it’s only her temporary form while in the protagonist's world. She claims to be a member of Sephirot, an organization that manages the Artifacts, and says she was sent to the protagonist's world to begin collecting the lost Artifacts which escaped after the the destruction of the shrine’s sacred relic. On discovering that Kakeru and Miyako are Users, she enlists their help to gather the Artifacts and restore normalcy to the world.