2000 years ago, a forbidden existence was created. Bearing the power of The Five Transcendental, he easily destroyed his foes one after another. He was named by the God of the Bible, and the Demon God, Behemoth, as Azrael. But after defeating most of his enemies, he sealed himself. Now that he reincarnated himself, he goes to the Jurald Academy, the school of different races, classes, and blood purity. He bears the surname of the House of Karnstein—one of the 27 Pillar Family of Hell, he is now known as Azrael Karnstein. While returning to the world, he realized that most of the factions that survived the Great War has recovered. Heaven and hell have worked together, but there are still some factions that are hostile. He also tried to hide the fact about his identity, but later shows it to the public's eye, but they still said otherwise. Despite being ignored by the public as the true Forbidden Child, he still proved it using his powers. There is only one problem that he's burdened with—Can he protect the world?