Rohan Kishibe is a mangaka who can read people like a book. At work on a new creation, Rohan recalls a tale of the blackest painting ever made. Called the most evil of paintings, it used a paint that should not exist. Driven by the events linked to it, Rohan and his editor, Izumi, go to the Louvre in France for answers.

Nori Kamitsuki moved from Chiba to Gunma prefecture as he begins to attend high school. There, he has received a warning from his classmate that "No one comes back alive from Gunma," and found more negative information as he looked it up on the net. In the midst of confusion and extreme culture shock, he has gotten himself involved with Gunma's rivals, Tochigi and Ibaraki prefecture.