In a world where half-humans who evolved distinctly from animals reside, a tough and hard-headed wolf named Shirou is often misunderstood due to his gaudy appearance. Shirou is in love with Usami, a rabbit with eye-catching brown skin. Though Shirou being a carnivore has Usami on edge, after the wolf saves him from a pervert, Usami shows a vulnerable side to Shirou that no one else can see. But then, Shirou starts to want to mate with Usami!