Demon
The contemporary Roman Catholic Church unequivocally teaches that angels and demons are real beings rather than just symbolic devices. The Catholic Church has a cadre of officially sanctioned exorcists which perform many exorcisms each year. The exorcists of the Catholic Church teach that demons attack humans continually but that afflicted persons can be effectively healed and protected either by the formal rite of exorcism, authorized to be performed only by bishops and those they designate, or by prayers of deliverance, which any Christian can offer for themselves or others.
Blue Exorcist
Rin wishes to become an Exorcist like his guardian to become stronger and to defeat Satan. He enrolls at the prestigious , an exorcist cram school, which is actually the Japanese branch of the , an international organization dedicated to protect Assiah (human realm) from the Gehenna (demonic realm). Much to his surprise, Rin finds that Yukio is already a veteran Exorcist and is one of his teachers. Thus begins Rin's journey to become an Exorcist, accompanied by his brother and his fellow students who quickly become his close friends.