A shopping trip separates two friends and turns one survivor into a government-backed Diver.
Reona Minazuki is searching for one person inside a much larger mystery. In ANOMALITH, the seventeen-year-old and her friend Arisa Kato are separated when the shopping mall they are visiting becomes an Anomaly Zone. ANOMALITH’s official story and character descriptions.

Reona survives. Arisa’s location remains unknown. To look for her, Reona becomes a Diver with the Anomaly Zone Countermeasures Office, an organization backed by the government. Her return to these spaces is voluntary, driven by the disappearance rather than an assignment alone.
The office supplies a wider framework around that personal search. Operator Yuiga Koda supports the dives, while research chief Imari Fushimi develops equipment from anomalous objects. Its founder, Kyoka Sudo, has her own experience of escaping a zone.
The official premise connects three unresolved matters: where Arisa went, why these zones exist, and the power that awakens in Reona during a dive. A missing friend gives the journey a specific destination even while the environments—and the means of surviving them—remain unfamiliar. ANOMALITH’s official story and character descriptions.