"Armed Girl's Machiavellism" is set in a unique school environment where female students are permitted to carry weapons, while male students are subjected to strict disciplinary rules. The story centers on Nomura Fudou, a delinquent transfer student who enrolls at Aichi Symbiosis Academy, a school governed by the Five Swords, a group of powerful female students who enforce their own brand of justice. Upon arrival, Nomura is immediately targeted by the Five Swords, who aim to reform his rebellious behavior through force. However, Nomura's exceptional combat skills and unyielding defiance challenge their authority, leading to a series of confrontations and alliances.

The Five Swords are led by Rin Onigawara, a disciplined and stoic swordswoman who wields a naginata. The group also includes Satori Tamaba, a cheerful yet ruthless fighter; Warabi Hanasaka, a calm and analytical strategist; Kikagaku Mochizuki, a playful and unpredictable combatant; and Mary Kikakujou, a reserved and enigmatic member with a mysterious past. Each member has a distinct personality and fighting style, contributing to the dynamic interactions within the group and with Nomura.

As the story progresses, Nomura's presence disrupts the established order of the academy. His refusal to conform to the Five Swords' expectations sparks a shift in the school's power dynamics. Through a series of battles and negotiations, Nomura gradually earns the respect of the Five Swords, leading to unexpected alliances and personal growth for both him and the group. The narrative explores themes of authority, individuality, and the complexities of human relationships, often blending action with moments of humor and introspection.

The plot also delves into the backgrounds of the Five Swords, revealing their motivations and struggles. Rin Onigawara, in particular, undergoes significant development as her interactions with Nomura challenge her rigid worldview. The series balances intense combat sequences with character-driven storytelling, creating a compelling mix of action and drama. As Nomura and the Five Swords navigate their evolving relationships, they face external threats and internal conflicts, further enriching the narrative.

"Armed Girl's Machiavellism" combines elements of martial arts, school life, and comedy, offering a distinctive take on the delinquent genre. The interplay between Nomura's unorthodox methods and the Five Swords' structured approach drives the story forward, culminating in a series of climactic battles and resolutions that redefine the academy's social hierarchy. The manga maintains a steady pace, ensuring that both action and character development remain central to the narrative.