The Rules of the Phenomenon
AnotherThis flow traces how the book turns an apparently random curse into a system of spatial, familial, and mnemonic boundaries.
increasing
Bearing strength in each event
decreasing
The Range of Blood

Kinship as Exposure
Two Degrees
Tatsuji Chibiki explains that students, parents, grandparents, and siblings are within range, while unrelated stepfamily is not.
Disaster as Network
The rule turns family into a map of vulnerability. Class membership extends beyond the classroom through blood, making private households part of the school’s danger.
Distance From Yomiyama

Geography of Danger
Weakening Signals
The phenomenon is strongest in Yomiyama and weaker farther away. Relatives living elsewhere appear largely protected.
False Escape
The rule offers a practical hope, yet the 1987 bus tragedy shows that ordinary accidents remain possible beyond the supernatural range. Safety can never be made absolute.
Records That Lie

Reality Repaired
Documents Altered
Class lists, official papers, diaries, photographs, recordings, and computer data change to conceal contradictions caused by the casualty.
Impossible Consistency
The phenomenon does not merely erase facts. It supplies replacements that fit together perfectly, making evidence itself complicit in the deception.
Memory as Floodwater

The Receding Flood
What Remains
Tatsuji Chibiki compares memory to water receding after a flood. People retain that a disaster occurred while forgetting who was involved.
Knowledge Without Identity
The metaphor explains why witnesses can remember the phenomenon but not the casualty. It makes forgetting an active structure of the world rather than a personal weakness.
The Observer’s Exception

Notes Outside the Current
Chibiki’s Binder
Tatsuji Chibiki’s records preserve names and deaths more effectively than ordinary memory. His role as observer may exempt his notes from some alterations.
Imperfect Protection
The exception is not fully explained. Even the archive may contain anomalies, reinforcing the idea that no perspective stands completely outside the phenomenon.
June 18 1998
June 18 1998
June 18 1998
June 18 1998
June and August 1998