Info: A lazy girl who serves as the Student Council President of Abydos and the head of the Foreclosure Task Force. She enjoys using an old-man-like way of speaking and prefers playing around to working. She refers to herself as an 'uncle' (ojisan), which, combined with her optimistic tone and habit of saying 'uhe~', makes for a fitting nickname. Because of this, she is often scolded by committee members, but once a mission starts, she fights at the very front to protect the other children. Since accepting the position of Student Council President, Hoshino has gradually become more cheerful. She is one of the most powerful students in Kivotos, and along with Hina, she is recognized as one of the strongest in terms of raw combat power.

Info: The Head Prefect of Gehenna Academy. Usually a lazy girl who finds everything bothersome, she shows the side of a strict Head Prefect when it comes to school rules. Although she constantly says 'how troublesome' as a habit, she judges situations on the battlefield without a moment's hesitation. Consequently, organizations hostile to Gehenna fear her appearance most. She is the strongest student in Gehenna. Countless delinquent students who indulge in Gehenna's characteristic lawlessness and act arrogantly don't even dare to challenge Hina, choosing to be paralyzed by fear or flee. Even if they do fight, they are easily suppressed as if snapping a child's wrist. Furthermore, she is one of the students counted among the strongest in all of Kivotos.

Info: The leader of Millennium's agent organization, C&C. At first glance, she looks like a small delinquent wearing a sukajan over a maid uniform, but in reality, she is an agent with Millennium's greatest processing capability. Her callsign, Double Zero, is regarded within Millennium as an icon promising victory. Her personality is very hot-headed and short-tempered, and she loves fighting. She also hates complicated things and absolutely loathes being interfered with or ignored. She is a typical tsundere or 'yandere' type who gets quite angry at both combat targets and those around her, but she shows a loyal, big-brother-like side by passionately jumping in to protect those she likes. She is one of the students counted among the strongest in Kivotos.

Info: The leader of Trinity's Justice Task Force and Trinity's official strategic weapon. Possessing a bellicose and violent personality, she tends to break anything she doesn't like first. The Justice Task Force is barely maintained thanks to the ability of the Vice-Chair, Hasumi. Although she is like an uncontrollable mad dog, she also shows a girlish side, unable to hide her shyness in front of Sensei. She is one of the students counted among the strongest in Kivotos. Among them, like Hina, she is a character who has been a benchmark for the 'strongest' from the beginning, with many depictions and settings of overwhelming combat power in the story.

Info: One of the members of the Tea Party, the student council of Trinity General School. Specifically, she is the head of the 'Pater Faction,' one of the three major factions that make up the Tea Party. She has been childhood friends with Nagisa for over 10 years, and another Tea Party member, Seia, is a very precious and close friend to her; she treats them casually, calling them 'Nagi-chan' and 'Seia-chan.' She uses informal speech. Due to her flighty, talkative, and mischievous personality, she sometimes draws out the anger of the serious Nagisa. She is Trinity's strongest student, standing shoulder to shoulder with Kenzaki Tsurugi. Naturally, she is also one of the students counted among the strongest in Kivotos.