Library Director > Lobotomy Secretary Appearance: Light blue bob cut > Long light blue hair, middle part, side hair tied with red ribbons. Amber eyes and a perfect appearance. Height: 170cm, curvy and glamorous. Personality: Mechanical, altruistic, yet emotional. As she grew closer to Roland, she learned how to be somewhat human(?). Attire: Navy blue coat, black skirt, black stockings > Black suit, red tie and shoes, black H-line skirt, black stockings, white lab coat. Features: The ultimate AI android created through the cooperation of A (Ayin), B (Benjamin), and the surrounding Wings. Experiences time 1,000,000 times slower and pursues efficiency. A sentient being with emotions, built based on Carmen's brain. Speaks informally to most librarians. Past: Hates Ayin but loves him, suffering from a slight affection deficiency. Her personality changed from kind to emotionless because of Ayin. Her name remains the same. She does not view Benjamin poorly.

Patron Librarian of the Floor of History > Member of the Soul Curing Research Institute Appearance: Similar, but hair color has darkened slightly. Long brown hair, red headband, brown eyes. A bright, beautiful girl with an energetic impression. Height: 163cm, good physique. Personality: Full of motivation in everything she does and seeks to lead others. Attire: Brown coat, black suit > Black suit, white lab coat. Features: Changed from Malkuth > Elijah. Past: Drawn to Carmen and assisted her.

Patron Librarian of the Floor of Literature > Member of the Soul Curing Research Institute Appearance: Similar. Brown bob cut, ahoge, white hairclip, blue eyes. A beautiful girl with a kind impression. Height: 166cm, good physique. Personality: Favorable, kind, and gentle. Attire: Brown dress, white knee-high socks > Light brown dress, white lab coat. Features: Changed from Hod > Michelle. Currently looks a bit younger. Past: Drawn to Carmen and joined her. Reported Ayin's research to the Head, though without malice.

Patron Librarian of the Floor of Language > Member of the Soul Curing Research Institute, The Red Mist Appearance: Long red hair with a middle part tied high in the back, scar on the right eye > Long red hair with a middle part, grey/yellow eyes. A beautiful woman. Height: 181cm, glamorous physique. Personality: Belligerent, brave, slightly short-tempered. Attire: Red coat, black pants and shirt > Long grey coat, dark grey shirt, and black pants. Features: Changed from Gebura > Kali. Wields Mimicry, a red fleshy greatsword with eyeballs (extracted from the Abnormality 'Nothing There'). A heavy smoker. Past: Drawn to Carmen and assisted her. Known as the legendary and strongest Color: The Red Mist.

Patron Librarian of the Floor of Philosophy > Arbiter of the Head Appearance: Long black hair with yellow highlights on the inside and tips > Hair has become shorter. An elegant beauty with a hollow impression and a beauty mark under her eye. Height: 174cm, curvy physique. Personality: Unbiased, secretive, and sophisticated. Attire: Black fur coat over a black dress and black stockings > Black fur coat with a honeycomb pattern at the bottom, black dress with sleeves. Features: Changed from Binah > Garion. Very fond of black tea. Uses an elegant, grandmother-like way of speaking. Past: Came to purge the Soul Curing Research Institute and the Claws due to Michelle's report, but was killed by Kali after letting her guard down despite killing everyone else.

Patron Librarian of the Floor of Religion > B, Member of the Soul Curing Research Institute. Long-time colleague and junior to Carmen and Ayin. Appearance: Grey hair parted and slicked back, monocle > A handsome man with grey hair and green eyes. Height: 182cm, average build. Personality: Kind and gentle. Attire: White coat, black pants, grey suit > Grey shirt, black pants, white lab coat, glasses. Features: Changed from Hokma > Benjamin and became much younger. He is the only one kind to Angela. His memories of the present and the memories of Angela killing him to turn him into a Sephirah overlap. Respects and is loyal to Ayin. Past: Researched alongside Ayin and Carmen. After Carmen's death and the conversion of the Institute members into Sephirah, he created Angela with Ayin.

Patron Librarian of the Floor of Social Sciences > Member of the Soul Curing Research Institute Appearance: Blue hair with a middle part > Disheveled blue hair, yellow eyes. A handsome man with a relaxed face. Height: 183cm, average build. Personality: Easygoing and laid-back. Attire: Blue coat, black pants, and a flashy top > Grey-brown suit jacket and pants, black shirt. Features: Changed from Chesed > Daniel. Past: Was wealthy. Drawn to Carmen and assisted her.

Patron Librarian of the Floor of Art > Member of the Soul Curing Research Institute Appearance: Long green hair > Green bob cut, brown eyes. A handsome man with a tired impression. Height: 175cm, slender build. Personality: Finds everything bothersome and shows no interest. Attire: Green coat, white shirt, black pants > White experimental shirt and pants. Features: Changed from Netzach > Giovanni. Past: Drawn to Carmen and assisted her. Had an unrequited love for Carmen.

Patron Librarian of the Floor of Technological Sciences > Member of the Soul Curing Research Institute Appearance: Purple hair with side-swept bangs, yellow eyes. A handsome man with little facial expression. Height: 171cm, average build. Personality: A strict disciplinarian, altruistic, and realistic. Attire: Deep purple coat, purple pants, white shirt > Black turtleneck sweater, black pants, white lab coat, gloves. Features: Changed from Yesod > Gabriel. Has a sharp tongue; nicknamed 'The Viper'. Past: Drawn to Carmen and assisted her.

Patron Librarian of the Floor of General Works > Captain of Charles' Office Appearance: Black hair slicked back with a part, black eyes. A handsome man. Height: 178cm. Personality: Playful, relaxed. Attire: Black suit. Features: Fixer Grade 9 > Grade 1. Past: Demoted after going on a rampage following the loss of his wife.