An ordinary high school student by day, an assassin living in the underworld by the night. A boy with two faces, Aragi Kai.His classmates hate him because of his anti-social character and weird aura.One day, Aragi and his classmates were suddenly transferred to another world.It is a world of swords and magic. A woman who calls herself Leonora appears before the confused students, and declares…“You are ‘Hero Candidates’ summoned here to defeat the Demon King. Please help us.”Leonora grants each of the students a unique ability: ‘Divine Protection’.While some powerful ‘Divine Protections’ are given like telekinesis and destructive blast, Aragi’s ‘Divine Protection’ is judgment.