Yuya Nomoto, an ordinary college student, met a mysterious high-school student called Hitomi after being involved in an incident, and saw her transform into a beast and fight a Leo monster at a landfill. They're Therianthropes who have brains of humans and fangs of beasts. Hitomi is Ratel, a Brute with the strongest killer instinct. Nomoto gets involved in their battles called Killing Bites.
Yuuya Nomoto was horrified to discover that the vehicle he was driving was being used to kidnap a high school girl, but he's even more shocked when the girl, Hitomi Uzaki, literally tears her kidnappers to pieces instead! Then she forces Yuuya to drive her to an arena where she bets the value of his organs on herself to win in a death match against a half-lion hybrid! Even more astonishing: Hitomi wins! That's because she's a Therianthrope, a genetically engineered fighter created specifically for the underground death matches known as Killing Bites! And now that Yuuya has been pulled into this dark underworld, he has no choice but to continue working for Hitomi. Because who's going to fight against a girl who's part honey badger?
