A girl named Yae reincarnates into a world where one's name determines
their essence. When a monster attacks her, she unleashes Arai, an ex-god in the form
of a golden tiger, to defend herself. Shortly after, however, Arai manipulates Yae into
assisting his little brother, who has been warped into a grotesque form by a disease
that strips people of their essences. As Yae searches for a cure, she finds herself
warming to the pompous, threatening Arai...