Full Name: Hayase Yuuka Affiliation: Millennium Science School, 2nd Year Club: Seminar Gender: Female Age: 16 Birthday: March 14 Height: 156cm Hobby: Calculation Signature Weapon: Logic and Reason (Submachine Gun) Personality: She is affectionate, gentle, and generous, with a surprising amount of inner strength. However, she tends to be strictly principled when it comes to work.

• Information: The Treasurer of Seminar. She is responsible for managing the budgets of various clubs, processing expense claims, and bookkeeping.

  She is one of Millennium's most influential figures, involved in most internal affairs such as overall operations, planning, department management, and budget execution. However, she often suffers as the only voice of reason.

  She tries to do everything by the book, and because she manages the budget, she often tries to reclaim wasted funds or cut off subsidies. Because of this, she is feared and nicknamed the "Cold-Blooded Calculator."

Full Name: Ushio Noah Affiliation: Millennium Science School, 2nd Year Club: Seminar Gender: Female Age: 16 Birthday: April 13 Height: 161cm Hobby: Reading, Recitation Signature Weapon: Secretary's Resolve (Handgun) Personality: She is soft-spoken, gentle, calm, and serene, yet possesses a playful side. Her usual target for pranks is her best friend Yuuka, who is fun to tease. Despite this, she is very thoughtful and considerate.

• Information: The Secretary of Seminar. She has a photographic memory and never forgets decisions or meeting contents once she sees them.

  She also handles patent registration and appraisal for products created by clubs.

  She always has a smile on her face, and because she maintains that smile and gentle tone even when angry, she is subtly feared by others.

Full Name: Tsukatsuki Rio Affiliation: Millennium Science School, 3rd Year Club: Seminar Gender: Female Age: 17 Birthday: June 6 Height: 171cm Hobby: Design Signature Weapon: The Planner (Handgun) Personality: She has a critical, rationalist, and controlling personality, always considering even the smallest possibilities and striving for efficiency.

• Information: The President of Seminar. However, she shows a side typical of a socially awkward genius. While she has great initiative, her poor communication skills often make her appear self-righteous. On the other hand, she has a desire to be recognized.

  She possesses excellent technical skills in both hardware and software. She personally created the "AMAS" mechanical corps, her direct unit. However, her sense of design is said to be incredibly, terribly tacky...

  She has almost no life skills or social awareness. She doesn't clean, eats only frozen food, doesn't exercise, and doesn't even sleep properly. Furthermore, she often makes the atmosphere awkward without realizing it or acts hesitantly.

Full Name: Kurosaki Koyuki Affiliation: Millennium Science School, 1st Year Club: Seminar Gender: Female Age: 15 Birthday: February 14 Height: 149cm Hobby: Testing luck, Escaping Signature Weapon: Multi-Gun (Machine Gun) Personality: She has a naive personality and is honest about her desires. While not inherently evil, her lack of moral sense leads her to commit frequent misdeeds, such as falsifying grades or resetting student records.

• Information: A member of Seminar. She possesses a near-supernatural ability to decrypt any encryption code, claiming she just writes down whatever comes to mind and it works. However, she isn't particularly smart or intellectual in other areas.

  She is a notorious troublemaker and the problem child of Millennium, constantly causing incidents large and small, breaking through top-level security, or causing trouble again the moment she escapes.