Tatsuji Chibiki

Tatsuji Chibiki serves as the librarian of Yomiyama North Middle School's second library, yet his past is inseparably tied to the deadly 'Calamity' that struck Class 3-3 back in 1972—a tragedy he witnessed firsthand as the class's homeroom teacher. Overwhelmed by a profound sense of responsibility, he stepped away from teaching and spent decades meticulously documenting the victims of each subsequent disaster, searching for answers hidden within the grim records. Though his demeanor is stoic and difficult to read, he proves to be a decisive and clear-headed ally when crises unfold, serving as an indispensable guide and pillar of support for the protagonists in their battle against the curse.