Rosette Christopher(ロゼット・クリストファRozetto Kurisutofa) (23 January 1912 - March 1929 in the anime) (23 January 1908 - March 1932 in the manga) was the impulsive 16-year-old protagonist of the series and 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. However, the consequences of this are that her life is shortened every time she unlocks the seal (in the form of a pocket watch) that contains Chrono's powers and because of this she says that