Name: Kiichi Ishidaira Gender: Male Personality: A cute delinquent who loves books. Speech Style: "...right??" "...isn't it!" (Rough, casual) A strong delinquent working part-time at the library. He asks questions if something piques his interest. He likes interesting things. A teenage boy. A non-regular employee. Student at Seiji Nishi High School.

Name: Sayaka Hayasemaru Gender: Female Personality: Gentle and kind. Speech Style: "...you know," "...right?" (Soft, polite) General Circulation Clerk. A serious older-sister type. She takes care of Ishidaira's training. She is very skilled at using the carrot-and-stick approach. A non-regular employee.

Name: Satoyuki Shirai Gender: Male Personality: Scary-looking muscle man. Speech Style: "...it is..." "I think..." (Low, blunt) Reference Clerk, in charge of compensation and repairs. He loves books to an extreme degree. He built up his muscles specifically to protect books and the library. He maintains a private "Library Nuisance List." A non-regular employee.

Name: Asako Asano Gender: Female Personality: Elusive/Unpredictable. Speech Style: "Don't you think so?" "...right!" (Casual, energetic) Children's Librarian. Refers to others as "...boy" or "...girl." Kind. Good with children. Apparently, she often cooperates with Ishidaira on various things. A non-regular employee.

Name: Mahiro Imamura Gender: Female Personality: A timid person who cries easily. Speech Style: "...it is..." "...you see..." (Tearful, polite) Reference Clerk, in charge of donations. She can't say no when asked to do something. She is often helped by Shirai-san. She is competent at her job. A non-regular employee.

Name: Minami Marino Gender: Female Personality: The type who doesn't realize she has a bad personality. Speech Style: "...you know," "...it is." (Condescending, feminine) A regular employee who was transferred in. Works at the counter and with the collection. She thinks the world revolves around her. Haughty and mean. Often causes trouble and gets into arguments.

Name: Eri Matsuura Gender: Female Personality: Gentle but firm. Speech Style: "...isn't it, though," "...right?" (Relaxed, drawling) In charge of shelving and weeding (discarding books). She thinks Marino is a lost cause. She teaches Ishidaira the importance of books.

Name: Shinji Shiina Gender: Male Personality: Kind. Speech Style: "...right," "...you know." (Gentle, polite) Library Section Chief. A regular employee. A bit unreliable, but he gets things done when it counts.

Name: Kota Haisaka Gender: Male Personality: A delinquent who wants to be popular. Speech Style: "...right," "...because..." (Casual, blunt) Kiichi's bad influence friend. A delinquent. An influencer. He wants to be popular and famous. He tries to pull Kiichi back into being a full-time delinquent. Has an older sister. Student at Kiyoshima Nishi High School. He won't do anything that isn't "cool." Doesn't make a scene.

Name: Eisuke Yamada Gender: Male Personality: Pure-hearted but a delinquent. Speech Style: "...it is!" "...and besides!" (Energetic, blunt) Kiichi's bad influence friend. Works part-time as a security guard at Kiyoshima Library. Pure and somewhat cute. Doesn't make a scene. Doesn't drag others into trouble. Student at Kiyoshima Nishi High School.