on year · off year cycle

The on year / off year cycle is the alternating temporal pattern governing the disasters associated with Yomiyama North Middle School Third-Year Class 3. An “on year” is a year in which the phenomenon operates and deaths occur among students and their immediate families; an “off year” is a year in which the expected disaster does not occur. The distinction is not merely retrospective. It determines when the class must adopt the “Not There” Strategy, governs how teachers and students interpret records, and creates the hope—repeatedly threatened by experience—that the cycle might eventually stop.

Definition and Historical Pattern

The cycle is established through the account of Tatsuji Chibiki, who had once been the head teacher of the class. The year 1975 was an off year, and that apparent reprieve encouraged him to take charge of Third-Year Class 3 again in 1976, hoping that the disasters might have ended. Instead, 1976 proved to be an on year. Five students and nine immediate family members died during that single school year, producing fourteen deaths in all. The deaths did not follow one consistent form: accident was followed by illness, suicide, and murder. The variety of causes made the pattern more disturbing, because the cycle did not announce itself through one repeatable mechanism.

The 1976 experience also showed that changing the physical classroom did not end an on year. Tatsuji Chibiki suspected that the classroom itself might be cursed and persuaded the school to move the class after summer break, but the disasters continued through the months that remained. After graduation in March, the “extra person” who could not have belonged in the class disappeared, yet the teacher’s memory of that person disappeared as well. The cycle therefore affects not only bodies and families but also the records and recollections through which a past year might ordinarily be understood.

Records, Memory, and Recognition

The distinction between on and off years is made visible in the Third-Year Class 3 class-list binder. In the records for 1996, an off year, the absence of the expected pattern becomes a meaningful fact in itself. By contrast, the preceding class list contains red X marks beside the names of Yukari Sakuragi and Ikuo Takabayashi, together with notes recording deaths: Sakuragi’s school accident on May 26, her mother Mieko’s car accident on the same day, Takabayashi’s illness on June 6, and the workplace accident suffered by Takeru Mizuno’s older sister Sanae on June 3. The binder converts the cycle into a bureaucratic trace, but the notes also show how the phenomenon reaches beyond enrolled students into their immediate families.

The cycle is difficult to recognize while it is happening because the “extra person”—the casualty hidden within the class—causes records and memories to be tampered with. Details that should expose the impossible presence are made to seem ordinary, and no one recognizes the casualty’s true identity. Tatsuji Chibiki confirms that this distortion really occurs without hesitation. His own inability, after the 1976 year, to remember which person had been extra demonstrates the rule from inside the experience: the people who lived through an on year may later possess information about it without possessing a reliable memory of having known it.

Countermeasures in On Years

The cycle directly governs the timing of the “Not There” Strategy. Tatsuji Chibiki explains that the strategy began after the tragedy of 1987 and was first implemented in 1988, an on year. Although the casualty had apparently entered the class in April, no one died that year, and the success of the measure established the tradition that it should be used whenever an on year was anticipated. The strategy thus transforms the calendar from a passive record of danger into a schedule for collective action.

Its results have never been dependable. From the year after 1988 through the period discussed by Tatsuji Chibiki, excluding the current year, there had been five on years. In the year before last, the strategy failed partway through the school year; among the other four years, it succeeded twice and failed twice. Failure does not necessarily mean that the student designated as “not there” abandoned the role. The strategy contains numerous regulations—for example, the selected student must be treated as absent at school, while ordinary interaction outside school may be permitted, except during school activities—but none of the guidelines is absolute. Because no one can determine with certainty which breach causes failure, the cycle remains resistant to complete administrative control.

The Cycle in the Current Year

The current Third-Year Class 3 is treated as being under peculiar circumstances, and Tatsuji Chibiki recognizes that the class’s situation belongs to the same historical framework. The attempt to increase the number of students treated as “not there” to two has no effect. After Mr. Kubodera’s death, the class gradually stops ignoring both Mei Misaki and Koichi Sakakibara, as though the failure of that additional measure has removed any reason to continue it. The shift is not announced as a formal decision; it appears as an invisible change in ordinary behavior, including Naoya Teshigawara speaking to Mei Misaki as though she truly existed.

The same pressure shapes conduct within the family and school worlds. Reiko Mikami and Koichi Sakakibara follow the Fourth North Yomi Fundamental by maintaining separate identities in the two settings: at school she is “Ms. Mikami,” while at home she is Reiko, and he remains “Sakakibara, the transfer student” rather than Koichi. Mr. Kubodera and most of the class know the truth and understand why Reiko must help enforce the tactic even though Koichi shares her home. The on-year response therefore suspends ordinary recognition across institutional boundaries, making kinship itself subject to the cycle’s rules.

Ritual, Danger, and Significance

The on year also organizes the class’s attempts to escape its fate through ritual and controlled movement. During the class camping trip, held for two nights and three days from August 8 at Sakitani Memorial Hall at the foot of Yomiyama Mountain, the head teacher proposes visiting Yomiyama Shrine. The shrine’s association with the mountain, the name Yomiyama, and oral traditions describing it as a linchpin between the living world and the land of the dead give the excursion the form of a possible intervention in the cycle.

The shrine is severely neglected, and the students clean it together while convincing themselves that the act might break the curse. Mr. Koga assures them that everything will be all right, but the attempt fails: the curse is not broken by cleaning a forsaken shrine. Later, Tatsuji Chibiki warns the group before their planned ascent of Yomiyama that deteriorating weather could cancel the outing and urges them to be careful about accidents on the return. When Ikuo Takabayashi suffers an attack, Chibiki tells the frightened students that it is an ordinary consequence of his condition rather than an extraordinary event, although Koichi recognizes that reassurance as a lie. The contrast between official calm and concealed knowledge shows how an on year turns everyday incidents into disputed signs.

The cycle’s decisive significance lies in this conflict between recurrence and uncertainty. It supplies a recognizable temporal order—on year, off year, on year—yet the phenomenon continually disrupts the means by which that order could be verified. Deaths recur, records preserve clues, memories fail, and preventive rules produce mixed results. Even when a year appears safe, the apparent safety becomes evidence only after the fact; when disaster begins, the class must act within a system whose rules are known to be incomplete. The on year / off year cycle therefore makes time itself part of the Yomiyama phenomenon: not a neutral background, but a recurring pressure that organizes fear, policy, ritual, and the unstable boundary between what the class knows and what it has been made unable to remember.