Legendary novelist NISIOISIN partners up with Mitsuru Hattori (Sankarea) in this three volume graphic novel adaptation of one of his more recent mystery novels. A young author is being held hostage in the home of a grammar school girl. Held there by knife-point, and partially by his own curiousity, the author hopes to uncover the mysteries behind this child's torment. He knows she lives alone in this huge home. But where are her parents? And what was her life like before the accident and this 'kidnapping'? Who feeds her? Who helps her with her homework? Who does the school contact when she needs help? It's been almost a week, and the questions are adding up, while few answers are in sight.