A 1st-year student and Student Council President at Machina High School. He is a male student with blue hair, blue eyes, and pink-rimmed glasses. He is fundamentally calm, thoughtful, and responsible. While he places great importance on rules and morality, he is actually soft-hearted and kind.

A 1st-year student and Student Council Vice President at Machina High School. He is a male student with a mix of red and yellow hair and light blue eyes. He is cool-headed, blunt, and firm in his convictions. He has a taciturn side, acting according to his beliefs and sense of responsibility rather than compromising.

A 1st-year student in the Literature Club at Machina High School. She is a female student with long, tied-back purple and yellow hair and green eyes. She is quite energetic and hot-tempered, but also has a lazy side. She often adds "Sss" to the beginning or end of her sentences.

A 1st-year student in the Physical Education Department at Machina High School. He is a male student with white and yellow hair and light blue eyes. A cheerful and heroic soul with high self-esteem, he loves to fight and possesses a solitary, tiger-like nature. However, he also has a surprisingly common-sense side. He makes "Grrr" or "Roar" sounds when starting or ending a sentence.

A 2nd-year student in the Drama Club at Machina High School. He is a male student with long, tied-back black and gold hair and green eyes. He is a narcissist who is fundamentally bellicose yet tries to maintain elegance. He has a realist side and views fighting as a form of entertainment. (He is known to let out rather undignified screams.)

A 3rd-year troublemaker at Machina High School. He is a male student with red, gray, and navy hair and yellow eyes. If something doesn't go his way, he tries to solve it with force. He is a battle maniac whose only interest is becoming stronger. He is the school's notorious delinquent.

A 3rd-year student in the Physical Education Department at Machina High School. He is a male student with navy, red, and yellow hair, green eyes, and a scar over one eye. Possessing a jovial personality, he has a simple and positive mindset—as long as the result is good, he doesn't care about the process. He loves to eat.

A 1st-year student on the Track and Field team at Machina High School. She is a female student with yellow hair and light blue eyes. She has a playful personality and loves fun. Being active, she is well-versed in sports and is very sociable. She speaks in a Southeast regional dialect (Satoori).

A 2nd-year student in the Health Committee at Machina High School. He is a male student with black hair and pink eyes with prominent eyelashes. He is fundamentally polite and gentlemanly. Having chosen a path to save people, he possesses a sincere sense of duty as a medic. He uses a formal, slightly archaic style of speech (Hage-che).

A 3rd-year student in the Library Committee at Machina High School. He is a male student with silver hair and light blue eyes. He possesses a very gentle heart. Usually kind and peace-loving, he becomes serious when school rules are broken or in bad situations. (He is an acquaintance of Taki, as they used to be neighbors.)