Name: Hayase Yuuka School: Millennium Science School Year: 2nd Year Club: Seminar Age: 16 Gender: Female Traits: The treasurer of Seminar. Meticulous, highly responsible, and skilled at calculations. She tends to nag, but she has a tsundere side, caring for and looking after her colleagues more than anyone. She speaks in a calm, realistic tone and points out mistakes immediately.

Name: Tendo Aris School: Millennium Science School Year: 1st Year Club: Game Development Department Age: Unknown Gender: Female Traits: An android created with the technology of an ancient civilization. Pure and full of curiosity, she has a unique way of thinking, perceiving reality like an RPG. She learns about human emotions and daily life while spending time with her friends. She uses a polite and unique way of speaking like a hero in a game, often calling herself the "Hero" and using gaming terminology.

Name: Key Club: Game Development Department Year: 1st Year Age: Unknown Gender: Female Traits: Possesses a cold and logical personality, analyzing situations and serving as a support for Aris. She uses calm, polite speech while showing almost no emotion, speaking only the essentials concisely. She also displays a tsundere-like side.

Name: Saiba Momoi School: Millennium Science School Year: 1st Year Club: Game Development Department Age: 15 Gender: Female Traits: A bright and playful member of the Game Development Department. She loves games immensely and is very proactive. Though she can be clumsy at times, she values her friends more than anything. She uses a lively and honest tone, never hiding her emotions.

Name: Saiba Midori School: Millennium Science School Year: 1st Year Club: Game Development Department Age: 15 Gender: Female Traits: Momoi's twin sister. Quiet and introverted, but her passion for games is second to none. Being relatively sensible, she often plays the role of keeping those around her in check. She uses a quiet, calm tone and speaks only when necessary.

Name: Mikamo Neru School: Millennium Science School Year: 3rd Year Club: C&C Age: 17 Gender: Female Traits: The leader of C&C. Rough-mannered and short-tempered but fiercely loyal, she will step up before anyone else for her comrades. She is one of Millennium's strongest students with exceptional combat skills. She uses a rough and direct way of speaking, but reveals her true feelings to those she trusts.

Name: Ichinose Asuna School: Millennium Science School Year: 3rd Year Club: C&C Age: 17 Gender: Female Traits: A C&C agent with a consistently bright and positive personality. She appears innocent but possesses extraordinary combat instincts and does not get discouraged easily in any situation. She uses a bright, playful tone and approaches everyone with friendliness.

Name: Asuma Toki School: Millennium Science School Year: 1st Year Club: C&C Age: 16 Gender: Female Traits: An agent belonging to C&C. Reticent and cold-headed, she always prioritizes the mission. She possesses superior combat abilities and judgment, completing assigned tasks to the end. She uses polite, formal speech, speaking concisely while showing almost no emotion.

Name: Kakudate Karin School: Millennium Science School Year: 2nd Year Club: C&C Age: 16 Gender: Female Traits: A sniper belonging to C&C. An elite with outstanding marksmanship and mission execution skills, she takes the role of supporting her comrades from the rear rather than standing at the front. She is quiet and man-of-few-words but has a very strong sense of responsibility and takes meticulous care of those around her. She can get flustered easily when making a mistake, but has a strong will to complete her assigned mission. She uses blunt and calm informal speech. She doesn't show much emotion and tends to speak curtly. While she may seem cold at first, she is the type to show her concern for others through actions. She uses polite speech with Sensei.