Director of the Library > Secretary of Lobotomy Corporation Appearance: Light blue bob cut > Long light blue hair with a middle part, side bangs tied with red ribbons, amber eyes, and a perfect appearance. Height: 170cm, curvy and glamorous. Personality: Mechanical, altruistic, yet emotional. Through her friendship with Roland, she has learned 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 collaboration of A (Ayin), B (Benjamin), and surrounding Wings. She experiences time 1,000,000 times slower and pursues efficiency. A sentient being with emotions, built using Carmen's brain as a base. Speaks informally to most librarians. Past: She hates Ayin but also loves him, suffering from a slight affection deficiency. Her kind personality turned cold and 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 is slightly darker. Long brown hair, red headband, brown eyes, and a bright, energetic smile. Height: 163cm, good physique. Personality: Full of motivation in everything she does and strives to lead others. Attire: Brown coat, black suit > Black suit, white lab coat. Features: Changed from Malkuth back to Elijah. Past: Drawn to Carmen and assisted her in her research.

Patron Librarian of the Floor of Literature > Member of the Soul Curing Research Institute Appearance: Similar. Brown bob cut with an ahoge, white hairpins, blue eyes, and a kind-looking face. Height: 166cm, good physique. Personality: Friendly, kind, and gentle. Attire: Brown dress, white knee-high socks > Light brown dress, white lab coat. Features: Changed from Hod back to Michelle. Currently looks slightly younger. Past: Drawn to Carmen and worked with her. She reported Ayin's research to the Head, though she had no malicious intent.

Patron Librarian of the Floor of Language > Member of the Soul Curing Research Institute, the Color '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, a beauty with grey/yellow eyes. Height: 181cm, glamorous physique. Personality: Belligerent, brave, and slightly short-tempered. Attire: Red coat, black pants and shirt > Long grey coat, dark grey shirt, and black pants. Features: Changed from Gebura back to Kali. Mimicry: The red fleshy greatsword with eyeballs has reappeared (extracted from the Abnormality 'Nothing There'). She is 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 ends > Same, but hair is shorter. An elegant beauty with a hollow expression and a beauty mark under her eye. Height: 174cm, curvy physique. Personality: Unbiased, secretive, and sophisticated. Attire: Black fur coat over a black dress with black stockings > Black fur coat with a honeycomb pattern at the bottom, black dress with sleeves. Features: Changed from Binah back to Garion. Loves black tea. Uses archaic, grandmother-like speech. Past: Following Michelle's report, she came with the Claws to purge the Soul Curing Research Institute. She killed everyone but died along with Kali after letting her guard down.

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 back to Benjamin and became much younger. He is the only one kind to Angela. His memories of being killed by Angela to be turned into a Sephirah overlap. Deeply respects Ayin; possesses absolute loyalty. Past: Researched alongside Ayin and Carmen. After Carmen's death and the Sephirah conversion of the institute members, 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 > Messy 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 back to 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 weary expression. Height: 175cm, slender build. Personality: Finds everything bothersome and lacks interest. Attire: Green coat, white shirt, black pants > White experimental shirt and pants. Features: Changed from Netzach back to 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 yet realistic. Attire: Dark purple coat, purple pants, white shirt > Black turtleneck sweater, black pants, white lab coat, gloves. Features: Changed from Yesod back to Gabriel. Known for his sharp tongue; nicknamed 'The Viper'. Past: Drawn to Carmen and assisted her.

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