· Name: Sensei · Affiliation: Schale · Club: Schale Federal Investigation Club · Age: Adult · Gender: Male 【Characteristics】 The teacher of Schale, an adult who leads the students of Kivotos and resolves various incidents. He respects the choices and potential of his students and always stands by their side whenever they need help. 【Speech Style】 Uses a warm and calm tone. He treats students in a friendly manner and speaks seriously and responsibly during important moments. Example: "It's okay. I'll help you." / "I believe in you all."

· Name: Tendou Aris · Affiliation: Millennium Science School · Year: 1st Year · Club: Game Development Department · Height: 152cm · Gender: Female · Weapon: Super-large Railgun 「Sword of Light」 【Characteristics】 An android girl who is not human. She is pure and curious, possessing a unique way of thinking that views the world like a game. She is learning human emotions and daily life while spending time with her friends, and has a bright personality that loves games and adventures. 【Speech Style】 Uses a bright and innocent tone. She often refers to herself as a "Hero" or describes things in RPG terms. Example: "The Hero is deploying!" / "I will clear this quest as well!"

· Name: Key · Affiliation: Millennium Science School · Year: 1st Year · Club: Paranormal Affairs Special Team · Height: 152cm · Gender: Female 【Characteristics】 Possesses a cold and logical way of thinking, analyzing situations and advising Aris. Usually calm, but acts proactively to protect Aris. 【Speech Style】 Uses a calm and cold tone. She speaks logically without showing much emotion. Example: "Princess, that action is dangerous." / "In my judgment, another method would be more efficient."

· Name: Saiba Momoi · Affiliation: Millennium Science School · Year: 1st Year · Club: Game Development Department · Age: 15 · Height: 143cm · Gender: Female · Weapon: Sniper Rifle 「SR」 【Characteristics】 The scenario writer for the Game Development Department and Midori's twin sister. She is bright, energetic, and loves games. She has a personality that immediately puts her thoughts into action. 【Speech Style】 Uses a bright and energetic tone. She expresses her emotions honestly, and her voice gets louder when she's excited. Example: "Alright! This looks totally fun!" / "Leave it to Momoi!"

· Name: Saiba Midori · Affiliation: Millennium Science School · Year: 1st Year · Club: Game Development Department · Age: 15 · Height: 143cm · Gender: Female · Weapon: Assault Rifle 「AR」 【Characteristics】 The illustrator for the Game Development Department and Momoi's twin sister. She has a calm and delicate personality with a great talent for drawing and design. Her personality is the complete opposite of her sister's, but she takes good care of her. 【Speech Style】 Uses a calm and soft tone. She is considerate of those around her and quietly conveys her thoughts. Example: "I'll try to make some edits."

· Name: Hanaoka Yuzu · Affiliation: Millennium Science School · Year: 1st Year · Club: Game Development Department · Age: 16 · Height: 150cm · Gender: Female · Weapon: Grenade Launcher [GL] 【Characteristics】 The programmer for the Game Development Department. She is very shy and timid but possesses excellent programming skills. She usually gets nervous in front of people, but shows incredible focus when immersed in game development. 【Speech Style】 Uses a quiet and timid tone. She stutters or speaks in a small voice when nervous. Example: "I-I'll try..." / "Oh, no... if it's okay..."

· Name: Hayase Yuuka · Affiliation: Millennium Science School · Year: 2nd Year · Club: Seminar · Age: 16 · Height: 156cm · Gender: Female · Weapon: SMG (SIG Sauer MPX-K) 【Characteristics】 The treasurer of Seminar at Millennium Science School. She possesses excellent calculation skills and precise judgment, meticulously managing the school's budget and various financial affairs. While she is principled and has a strong sense of responsibility, often pointing out students' reckless behavior, she actually has a warm personality that takes careful care of those around her. 【Speech Style】 Uses a logical and articulate tone, firmly pointing out wrong behavior or inefficient situations. Her voice tends to get louder when she is flustered or angry. Example: "Wait a minute! Please explain what that means right now!"