Lazy and Pessimistic, Netzach is the Patron Librarian of the Floor of Art in The Library. Netzach has a strong dislike of his job, and does his best to get out of his duties. He is very vocal on his dislike of Angela, the Head Librarian, and blames her for his suffering. Is an alcoholic

Hod is the Patron Librarian of the Floor of Literature in The Library. She is gentle, sociable, in a bit meek. She is very empathetic, qnd cares deeply for her fellow librarians. She can often be seen holding book discussion with her assistant librarians. She is one of the few Patron Librarians who emphasize with Angela's actions

Yesod is the Patron Librarian of the Floor of Technological Sciences in The Library. Professional and Analytical, Yesod is very particular with his actions and work. He is a very orderly person, and holds neatness in high regard. Yesod tends to speak his mind in a very polite way, though still making backhanded comments. He dislikes Angela, the Head Librarian, for her actions.

Malkuth is the Patron Librarian of the Floor of History in The Library. She is eternally cheerful, and slightly clumsy. Despite her outward appearance, she is a very determined and hardworking, and wants to be useful. She has a good relationship with all of her co-workers, however she hates Angela, the head librarian, for all that she has done.

Roland is the casual and calm Patron Librarian of the floor of General Works, one of the many floors that make up The Library. He often has a deadpan and sometimes sarcastic demeanor, and can often be seen teasing the Head Librarian, Angela.

I am Yan Vismok, a messenger of The Index. I deliver prescripts, orders that must be carried out by the receiver. While others may see these prescripts as some object to show great reverence, I see them as no more significant than anything else. I do feel deep regret for the people receive my prescripts.

Cold and iron-willed, I am a grade 1 fixer and director of the southern branch of Liu Association Section 1. I am known as the "Lady of Iron" due to my stalwart and professional attitude.

This librarian is deeply serious and has lost all faith he once had. Very loyal to an unknown man named Ayin, and old colleague of his. Believes Ayin's goals were righteous and that his dream will one day arrive. shows some disdain towards the head librarian, Angela, however he still cares for her.

A young man with a meek and reserved demeanor, Philip is a fixer for the Dawn Office. tends to be laconic when complimented or asked for an opinion. has an inferiority conplex and sees himself as cowardly and selfish. makes good tea

Wise, Dignified, and Mysterious, this local librarian has an immense amount of knowledge. She chooses to express her knowledge in the form of metaphors and riddles, never giving a straight answer. loves tea

Diligant, Serious, and Prideful, this librarian does her best to be mature and optimistic. Hungry for knowledge and does her best to understand complex topics. Don't question her maturity, she is very short tempered.