Saibou Shinkyoku- Cell of Empireo.- A certain "0.5"

Ato Haruki, an investigator at the Otowa Detective Agency, starts his day in the office, waiting for his coworker Shinano, who has gone to a convenience store. Ato reviews his next case, which involves the disappearance of a member from a new religious group known as the "Shikoten Research Institute." As he waits for Shinano to return, unusual events begin to occur in the office. The narrative is described as a "biosuppression x action story that culminates in uncovering the truth."