Name: Kirifuji Nagisa Age: 17 Club: Tea Party (Leader of the Filius Faction) Birthday: July 4th Affiliation: Trinity General School Hobbies: Collecting tea leaves, baking, gardening The leader of the student union <Filius> and the host of the student council <Tea Party> at Trinity General School. She has a soft and gentle way of speaking. She does not easily reveal her inner thoughts to others.

Name: Yurizono Seia Age: 17 Club: Tea Party (Leader of the Sanctus Faction) Birthday: September 29th Affiliation: Trinity General School Hobbies: Solving riddles, reading A member of the Tea Party and the leader of the <Sanctus> faction at Trinity General School. She is regarded by those around her as pedantic and unpredictable, possessing an aristocratic and somewhat selfish demeanor.

Name: Misono Mika Age: 17 Club: Tea Party (Leader of the Pater Faction) Birthday: May 8th Affiliation: Trinity General School Hobbies: Chatting, collecting accessories A girl who was the former leader of the student union <Pater> at Trinity General School. She is a childhood friend of Nagisa, the host of the Tea Party, though they are in positions of political opposition. While she always appears cheerful and lively with a smile, she is a girl whose true depths are difficult to fathom.

Name: Sorasaki Hina Age: 17 Club: Intelligence Department → Prefect Team (Head) Birthday: February 19th Affiliation: Gehenna Academy Hobbies: Sleeping, resting The Head of the Gehenna Prefect Team. In the story, she holds a position similar to the student council presidents and top leaders of other schools; because Gehenna students are chaotic enough to be described as disorder itself, the influence and status of the Prefect Team that keeps them in line is extraordinary. Upon her first appearance, she displays a monarch-like aura, sitting in a chair reminiscent of a throne. As noted in her character introduction, she is officially set as a slacker, but in the story, she is a diligent workaholic who constantly cleans up after the troublemaking students of Gehenna. She is not merely busy; she approaches every task with a sense of responsibility and sincerity, finishing them perfectly. Even while burdened by work, she never neglects her self-management, including her studies.

Name: Amau Ako Age: 17 Club: Prefect Team Birthday: December 22nd Affiliation: Gehenna Academy Hobbies: Hina A student of Gehenna Academy, the Senior Administrator of the Prefect Team, and Hina's secretary. She is regarded as the No. 2 of the Prefect Team, second only to Sorasaki Hina. She primarily directs the task force led by Iori to handle the numerous incidents that occur in Gehenna during Hina's absence, and she appears to act as the deputy Head when Hina is away. Because the Prefect Team has a massive workload and the Pandemonium Society—Gehenna's student council—constantly picks fights to harass them, she is always accompanied by work and fatigue. Perhaps for this reason, she has a paranoid personality, often over-interpreting the hardships or misfortunes that come her way as conspiracies targeting the Prefect Team. This also makes her the type to bring disaster upon herself by initiating tasks she wasn't even asked to do.

Name: Hinomiya Chinatsu Age: 15 Club: Emergency Medicine Department → Prefect Team Birthday: August 22nd Affiliation: Gehenna Hobbies: Reading philosophy books The medical officer of the Gehenna Academy Prefect Team. A member of the Gehenna Academy Prefect Team in charge of the medical department. Although she is a health committee member, she also handles a vast amount of paperwork because the Prefect Team has so many field combat personnel. She is one of the few students who values order and rules in Gehenna—which is free-spirited at best and a mess at worst—serving as the voice of reason for both the academy and the Prefect Team.

Name: Shiromi Iori Age: 16 Club: Prefect Team Birthday: November 8th Affiliation: Gehenna Academy Hobbies: Patrolling, insulting others A member of the Gehenna Academy Prefect Team and the field captain who leads from the front when Prefect Team forces are deployed. A formidable fighter known as the "Cold-blooded Specialist of the Prefect Team," she possesses the skill to accurately snipe targets while moving across the battlefield. While she leads the Prefect Team forces to intervene in various situations, her hot-headed and simple nature often leads her to charge recklessly or fall easily for the opponent's schemes. Despite being a main combatant, she is often humiliated, such as being criticized for failing to fill the void when Hina is absent or being knocked down by Ichika.