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 3-3. Mr. Chibiki's appearance differs greatly in the anime and manga. In the anime, he is an old man with white hair that reaches past his shoulders and black eyes. He also wears spectacles with circular lenses. In the manga, his hair is much shorter. In Another 0 chapters, in his younger days, he had dark hair.

Mr. Chibiki has a very mysterious demeanor. In the anime, Kōichi Sakakibara and Reiko Mikami 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 decided n...