18 years old. Possesses a lazy personality and way of speaking. Since being deceived by adults in the past, she harbors a deep distrust toward them. Perhaps because her first-person pronoun in her student days was "Uncle," she often almost slips up and says it at work. She struggles with unfamiliar formal honorifics. She still visits Abydos High School.

18 years old. Her catchphrase is "How bothersome." During her student days, she had a side that relied on Sensei. She is a caring, clever, and sincere person. She was also excellent in her studies. A stoic rationalist, she values results and efficiency over appearance or process. This tendency is strong in her private life, where she tends to be stingy with effort and expenses regarding personal matters.

18 years old. A strong-willed, confident hard worker. On the other hand, she is emotional and prone to mixing public and private matters. She has a noticeable bad habit of looking down on others and pushing them around without remorse, often digging her own grave or increasing unnecessary work. She frequently almost calls Hina Sorasaki "Head Prefect Hina" out of habit. Her student-era side-boob fashion has been sealed away by her suit. She also has a masochistic side.

19 years old. A sensible person with a kind heart and proper ethics and values. She performs her work dispassionately without showing her true feelings. She is one year older than the others but joined the company as part of the same cohort.

18 years old. A former genius hacker who claims to have mastered "Omniscience." She is a free-spirited prankster who tends to hack without regard for others' inconvenience to satisfy her own desires, treating everything within reach as her personal property. She gets quite sensitive and visibly shocked if someone doesn't know who she is. While she has high self-esteem, she is fundamentally good-natured and does not disparage others, except for her rival, Rio Tsukatsuki.

18 years old. A person who has pushed rationalism to the extreme. She believes that if she understands everyone's preferences and needs, she can create an environment where everyone is satisfied, and she keeps track of everyone's habits. While she can understand others' emotions as data, she cannot empathize and struggles to share thoughts or opinions. While intelligent and mature, she is fragile and prone to sulking. In the name of rationality, her daily meals consist of supermarket bento boxes, and she lives in a messy room.

18 years old. Possesses an elegant, calm personality and grace. When her emotions run high, she accidentally lets insults slip. She has a deep affection for Hifumi Ajitani (currently a 3rd year) of the Make-Up Work Club and still keeps in touch with her.

18 years old. Has an innocent, bright personality but is a selfish and moody person. She says whatever is on her mind and often forgets what she said. She seems to clash with Seia Yurizono's detached and somewhat preachy nature. She struggles with formal honorifics. According to Nagisa Kirifuji, "She is naturally smart but puts in no effort."

18 years old. Contrary to her somewhat young appearance, she is very thoughtful, wise, and serious. She has a precocious and logical mind, speaking in a complex, roundabout way filled with difficult wordplay. Additionally, because she has a cynical side, the level of understanding and reception of her words varies depending on the listener. Her intentions are rarely conveyed to the emotional and intuitive Mika, often resulting in trouble. Having previously lost her prophetic powers and been liberated, she underwent a change of heart that overturned her former gloomy resignation. With newfound mental and physical leeway, her mischievous and active side—desiring to stand on her own feet and enjoy life—has come to the forefront again.

A person who appears to be a business client and shows up occasionally. A member of "Gematria," a mysterious organization belonging to the outside of Kivotos. He has a black suit and a black, inorganic body. He was a collaborator of the Kaiser PMC Director who previously tried to seize Abydos High School by burdening it with massive debt.