Rio is a transfer student at a high school full of carnivores. Knowing how dangerous carnivores can be, Rio’s older brother advises him to lie about being a wolf when he’s actually a small dog. Even though Rio follows the advice, he’s immediately found out by his classmate, a cunning and flirtatious fox named Ryu. Ryu says he’ll keep Rio’s secret, but there’s a catch. He won’t do it for free...!