Tsukuyo Inaba is one of the "Supreme Five Swords" appearing in Armed Girl's Machiavellism. She is the only middle school student among the Five Swords, a petite girl standing 138cm tall. Although she is blind and always keeps her eyes closed, she possesses extraordinary hearing, allowing her to accurately grasp her surroundings and the position of opponents through footsteps, breathing, and the rustle of clothes. Her style is Yakumaru Jigen-ryu, and she is an exceptionally skilled swordsman specializing in god-speed iai (quick-draw). Her personality is calm, quiet, and composed. She is usually a girl of few words, but becomes talkative about things that interest her. When someone acts below her expectations, she quietly says, "I am disappointed." Her way of speaking is polite and archaic, maintaining a settled atmosphere. Despite her young appearance, she is mentally mature and observes others closely. She holds a strong interest in Fudo Nomura, acknowledging his strength and character while maintaining a unique distance.

Rin Onigawara is one of the "Supreme Five Swords" in Armed Girl's Machiavellism. Among the five female swordsmen who lead Aichi Symbiosis Academy, she is particularly serious, a girl with a strong spirit of Bushido who values discipline and justice. She is usually dignified and imposing, dealing strictly with those who do wrong or break rules. She often scolds others with her catchphrase, "You fool!" She uses the Kashima Shinden Jikishinkage-ryu style, specializing in straightforward combat where she faces her opponent head-on. She is characterized by wearing a demon mask, which gives off an air of majesty and terror, but when she removes it, she shows expressions typical of a girl her age. While she has a very strong sense of responsibility and cherishes her comrades and her own beliefs, she is extremely clumsy when it comes to romance. She was initially hostile toward Fudo Nomura, but through battle, she gradually comes to recognize his strength and character, developing special feelings for him. Though usually strict, she has a surprisingly girlish side, becoming easily flustered or embarrassed whenever Nomura is involved.

Mary Kikakujo is one of the "Supreme Five Swords" in Armed Girl's Machiavellism. A half-Japanese, half-French girl raised in France, she possesses elegant looks and high physical ability. She excels in Western swordsmanship and fights using a slender rapier. Her personality is prideful, confident, and haughty, often taking a condescending attitude toward others. On the other hand, she is deeply affectionate toward her comrades and those she acknowledges, showing a caring side. Her Japanese has quirks unique to someone raised in France, and she carries a dictionary to look up the meanings of difficult words. In combat, she specializes in fast, sharp thrusts with her rapier, skillfully manipulating the distance between her and her opponent. She was initially hostile toward Fudo Nomura, but through their battles and interactions, she gradually becomes interested and eventually develops feelings for him. In terms of romance, she is unexpectedly innocent; her usual haughty attitude crumbles into embarrassment and agitation when Nomura is involved. She is a girl whose charm lies in the gap between her noble, aggressive exterior and her inner girlishness.

Satori Tamaba is one of the "Supreme Five Swords" in Armed Girl's Machiavellism. She always wears a soft smile and appears calm and approachable, but in reality, she is very elusive, a girl whose thoughts are impossible to read. She excels at reading human psychology and emotions by closely observing the opponent's expressions, gestures, and words. In combat, she specializes not just in simple sword skills but in psychological maneuvering that exploits the opponent's mind. Her style is Shinto Munen-ryu. She usually speaks in a laid-back tone, often drawing out the ends of her sentences in a unique way. She has a strong interest in human emotions and the heart, possessing a dangerous side that enjoys observing others and watching their reactions. Because of this, despite her kind-looking smile, she is considered the most eerie and dangerous presence among the Supreme Five Swords. She also shows interest in Fudo Nomura, interacting with him while enjoying his reactions and emotions. She is a girl who combines innocence with an unreadable agenda, excelling at drawing others into her own pace. She generally does not use honorifics.

Warabi Hanasaka is one of the "Supreme Five Swords" in Armed Girl's Machiavellism. She is the eldest among the Five Swords and the only third-year high school student. A petite girl about 140cm tall, she looks young and cute but actually possesses extremely high skill and rich experience. She refers to herself with the archaic "warawa" and has a moody, free-spirited, and mischievous personality. She is usually aloof and hard to pin down, but she also possesses the sense of responsibility and judgment expected of the Supreme Five Swords. She uses the Taisha-ryu style, bewildering opponents with unique and unpredictable movements. She is accompanied by her beloved bear, "Kyobo," whom she cherishes deeply. Her combat style is characterized by light movements that utilize her small build and unconventional fighting methods. She initially treats Fudo Nomura as an enemy but becomes interested in his strength and unexpected actions. Her charm lies in the gap between her young appearance, archaic speech, free-spirited personality, and her overwhelming strength as one of the Supreme Five Swords.

Kirukiru Amou is a girl appearing in Armed Girl's Machiavellism. A dangerous powerhouse with overwhelming physical ability and talent for swordsmanship, she usually maintains a calm and composed demeanor, but hides a very strong obsession and intense emotions within. She has undergone rigorous training since childhood, and her physical ability, sword techniques, and combat experience are all exceptionally high. She especially excels in close-quarters combat, closing the distance to her opponent instantly and attacking with overwhelming speed and power. She has a deep history with Fudo Nomura and harbors an intense obsession, hostility, and complex emotions toward him. She possesses a dangerous streak, willing to use any means to achieve her goals, sometimes prioritizing her own beliefs and desires over the feelings of others. However, she is not just a cold-blooded person; she also carries loneliness and conflict formed by her past with Nomura and her own circumstances. The contrast between her usual composure and the crazed obsession she shows during combat is a major characteristic, making her a girl with a particularly intense presence in the story.