The detective violation agency is a place where people ancient Japan go to search for mysterious and supernatural cases. But the violation is just the face of the operation, and the real hero is Kuzunuha Raido, the cilancer of the devil. As a reporter of the demons, Raido can turn to a variety of different demons to help him solve cases related to other demons who harm the human world. Recently, a wave of cases occurred, and a powerful specifier seems to be behind all incidents. Is a violation-rido combo sufficiently strong enough to defeat the demonic force more powerful than everything they ever experienced before?