Ireia Kitty

The oldest Armed Librarian, and one of the five strongest armed librarians. Her job is to instruct trainee Armed Librarians. Her kind and friendly personality has earned the trust and love of most of the armed librarians. She mainly uses bare hand to hand combat. She has tremendous strength, which she uses to lift large and heavy objects easily. Her magic ability is time control, which she uses to change the time flow of any objects in her visual range.

[Spoiler] Voiced by Tamura Yukari when she gets younger in the last episode [/Spoiler]