“The second you put that mask on, forget who you were." During the day, Nora works as the marketing manager in a company called "Pyure". Though at night, she goes by a totally different identity, Nine. Dwelling between the Underworld and the mortal realm, she delivers the souls of newborns and receives those of the dead. The system supposedly worked upon an agreement between the angels and demons, until this so-called "peace" reveals itself as an act for a larger plan.