Hazuki Touji, a high school student in Tokyo, has lost something precious and spends his days in solitude, engrossed in graffiti... One day, a mysterious figure claiming to know the truth behind his father's death suddenly sees through his true identity...!? Kamo Shuuhei (Gangsta: Cursed.) and Shirato Seiichi (Kaijuu Jieitai) present a modern-day armchair detective story that makes full use of Open-Source Intelligence!