Rosette Christopher

She is an elite Exorcist for the Order of Magdalene's New York Branch. Though she is sent on many missions regarding the exorcism of many demons and the general supernatural, her primary focus is on her search for her missing younger brother, Joshua Christopher, who was taken by the demon Aion four years before the series' beginning. In order to do this, Rosette formed a Contract with the hornless Demon, Chrono. Despite this her life being shortened because of the contract, Rosette pushes forward, determined to save her brother.