Tatsuji Chibiki

Tatsuji Chibiki is a librarian at Yomiyama North Middle School. 26 years ago in 1972, he was the homeroom teacher for the 9th Grade Class 3.

Personality
In the anime, Kouichi Sakakibara and Reiko describe him as "The Lord of the Library." He claims that he ran away because he felt guilty and was afraid for his life, so he became a librarian instead of a teacher to avoid the class' curse. He is always serious but also irresponsible.

Appearance
He is an old man with white hair that reaches past his shoulders, who wears spectacles. He has shorter hair in the manga. His appearance in the manga and anime differ greatly.

Plot
He is often seen in the library, and occasionally talks to Mei there. In episode 6, he tells Kouichi and Mei more about the curse and how the Misaki from 26 years ago was in fact a boy. He also informs them that he is an ex-teacher who taught the 9th class in 1972, and ran away, becoming a librarian because of the fear that he would die. In episode 9, after Nakao's funeral, Chibiki tells Kouichi and Mei the fact that Junta's death, even if it happened outside Yomiyama, was caused by an event that occurred in Yomiyama.

Trivia

 * In the original novel, he has detailed notes of each year's death. However, unlike in the anime, he has no knowledge of Ritsuko Sakakibara's death.