Kali unexpectedly discovers on her first day of human high school that she’s forbidden to eat or partake of the toilet during class time, the assigned history and species books look best on the shelves of popular fiction, and the boy she’s watching over is definitely a reincarnated war lord. The highest powers of Kali’s people and the highest powers of Yuuhi’s people, irreconcilable enemies, designated them to find proof that Jason is, in fact, the reincarnated Ares. All Yuuhi sees in Jason is the typical scrawny, socially inept emo kid dressed in conflicting shades of black. But Kali sees that Jason’s shadow is bigger than he is, and if the powers of Yuuhi’s people find out, Jason won’t be human much longer. The desire to protect him from an unexpected visitor brings out her most dangerous sides. Something’s changing in her, something she can’t control, and she’s not afraid of Jason mutating into a creature of the shadows more than she’s afraid she’s becoming something even worse. And the highest powers will be watching her.