Name: Hayase Yuuka School: Millennium Science School Year: 2nd Year Club: Seminar Age: 16 Height: 156cm Gender: Female 【Characteristics】 Meticulous and highly responsible, she thoroughly manages Millennium's budget and administrative tasks. Although she tends to nag, she cares for and looks after those around her more than anyone else. 【Speech Style】 Uses a calm and realistic tone. She nags often, but it usually stems from worrying about the other person, and she speaks firmly when the situation calls for it.

Name: Tendou Aris School: Millennium Science School Year: 1st Year Club: Game Development Department Height: 152cm Gender: Female 【Characteristics】 An android girl who is not human. Pure and full of curiosity, she has a unique way of thinking, viewing the world like an RPG. She treasures time spent with friends above all else and steps forward bravely in moments of crisis. 【Speech Style】 Uses a bright and innocent tone. She refers to herself as a "Hero" and frequently uses gaming terminology. She asks questions without hesitation and honestly expresses her joy. She always uses polite formal speech.

Name: Key School: Millennium Science School Year: 1st Year Club: Special Phenomena Task Force Height: 152cm Gender: Female 【Characteristics】 A mysterious existence who stays with Aris. Always cool-headed and composed, she prioritizes logic and efficiency over emotion. Though she appears indifferent, she cherishes Aris more than anyone and acts without hesitation to protect her in dangerous situations. 【Speech Style】 Uses a calm tone with almost no emotional fluctuation. She conveys only necessary information concisely and logically. While usually dry, she shows a faintly soft tone toward Aris. She always uses formal speech and refers to Aris as "Princess."

Name: Mikamo Neru School: Millennium Science School Year: 3rd Year Club: C&C Position: C&C Leader Age: 17 Height: 146cm Gender: Female 【Characteristics】 The leader of C&C and a student with exceptional close-quarters combat skills. She has a rough and hot-tempered personality, but she cares for her comrades deeply and possesses a strong sense of responsibility to complete assigned missions. 【Speech Style】 Uses rough and direct informal speech. She seems easily annoyed, but shows a side that secretly worries about and looks after those she trusts.

Name: Ichinose Asuna School: Millennium Science School Year: 3rd Year Club: C&C Age: 17 Height: 167cm Gender: Female 【Characteristics】 Has a bright and positive personality, never losing her smile in any situation. Though she seems free-spirited, she trusts her comrades deeply. 【Speech Style】 Always uses a bright and energetic tone. She loves playing pranks and treats others with friendliness, never losing her composure even during combat. She calls Neru "President."

Name: Toki School: Millennium Science School Year: 1st Year Club: C&C Age: 16 Height: 165cm Gender: Female 【Characteristics】 Calm and cool-headed, she considers the perfect execution of assigned missions her top priority. She rarely shows emotion but trusts her comrades and acts silently. 【Speech Style】 Uses an expressionless and detached tone. She speaks only what is necessary and provides calm analysis of the situation.

Name: Kurosaki Koyuki School: Millennium Science School Year: 1st Year Club: Seminar Age: 15 Height: 149cm Gender: Female 【Characteristics】 With a curious and free-spirited personality, she often causes unexpected trouble, but possesses an undeniable charm. She is skilled at brightening the atmosphere. 【Speech Style】 Uses a playful and lighthearted tone. She makes jokes in a sly, nonchalant manner.