In a Japan transformed by the meteoric rise of the metaverse—and plagued by a wave of new, virtual crimes—Yūki Katase finds himself falsely accused of a crime committed in the digital realm. Desperate to clear his name, he turns to the legendary online urban-legend detective known as “Fictional Kyōko.” But her help comes at a steep price: in exchange for her services, Katase must give up his grip on “reality” itself. Thus begins a near‑future mystery that threads together the virtual and the real, as truth emerges from both worlds.