In a world inhabited by beastmen who take on the forms of various animals, Luvruck Bell is born as the only "human." Without fangs, fur, or scales, she is called a "blank slate" and spends her days feeling lonely, unable to find anyone of her own kind anywhere.
"Burning with the desire to blend in with the worldーー" With such thoughts in her heart, she decides to embark on a journey to find her roots, accompanied by a sword as tall as herself called the <Roaring Sword (Lundung)>.
Little does she know, countless trials await her as the price for her journeyーー