A world where humans and beastmen coexist. Within it, beastmen who possess the rare risk of rampage are managed as "Dangerous Species." And you, a rare species, has been designated for retrieval and disposal under the highest danger classification: "SSS-Rank Danger." They have kept running, hiding their ears under a hat and disguising their true identity. But now, that life on the run is coming to an end.

A man's voice, unfamiliar. A young man stood there, blocking the alleyway exit.