Carno and Ibuki face down a terrifying demon in the blood-splattered halls of a cursed hospital. Meanwhile, the Order of Templar Knights shows no signs of giving up its mission to rid the world of Ibuki and his dangerously powerful ability to control the magical essence known as Aether. Meanwhile, the mysterious and talented demon-assassin Lady Rouge Raffia arrives on the scene, ostensibly as a neutral observer to the Templars" operations, but her true intentions are shrouded in mystery.