The "living flip phone" isn't a living flip phone at all; it's a person who's really somewhere else talking through a magic floating flip phone. That person being a vampire in the form of a padlock who locked himself away in an inescapable labyrinth while his living pocket universe "granddaughter" (that is, accidental creation), the Holy Scripture Triten, lives as an ordinary schoolgirl by the name of Hibino Hibiki.