Death Weapon Miester Academy was made by Death himself to stop evil from plunging the world and all of humanity into chaos by the Kishin. The Kishin are evil demons that have an eternal hunger for destruction. So to make sure that the Kishin never regain their hold over the world The Grim Reaper, Death.So in order to do that the students there have one demon weapon. These weapons can take the form of a human as well.