Mai Zenin, a second-year Kyoto Jujutsu High student and scion of the prestigious Zenin clan, mirrors her twin sister Maki in appearance but distinguishes herself through shorter black hair and a guarded disposition. Born into a family that prized sorcerous might over women’s worth, she endured systemic abuse alongside Maki due to their perceived lack of jujutsu talent. This environment bred resentment toward her sister, whose defiance of clan traditions pulled Mai unwillingly into a sorcerer’s life she never chose. Her personality—marked by icy sarcasm and emotional armor—formed through years of familial trauma and the suffocating pressure to meet Zenin expectations. While openly hostile toward Maki and quick to mock allies like Megumi Fushiguro or Yuji Itadori, this veneer concealed vulnerabilities and a yearning for ordinary life. Strained yet enduring bonds with peers such as Momo Nishimiya and Kasumi Miwa contrasted with her internal struggles during the Kyoto Goodwill Event, where duty clashed with deepening disillusionment. As a Grade 3 sorcerer, Mai’s combat relied on her Construction technique, crafting cursed-energy objects with meticulous control. Her signature revolver fired precise cursed bullets, favoring tactical range over brute force. Limited energy reserves underscored her rivalry with Maki, whose physical mastery flourished without cursed abilities, framing their conflict as a clash of survival strategies. The sisters’ relationship shifted from fractured kinship to lethal solidarity. Mai long blamed Maki for breaking their childhood pact to remain together, fueling years of estrangement. Yet during their father’s lethal assault, she sacrificed her remaining energy to forge a spear capable of annihilating the Zenin legacy. This act acknowledged their diverging paths while demanding Maki dismantle the system that tormented them. Mai’s final defiance rejected jujutsu society’s glorification of strength, choosing self-erasure over compliance with its violent norms. Her death framed systemic oppression as the true killer, not personal inadequacy. By gifting Maki a weapon to “destroy everything,” she tied her legacy to her sister’s crusade against their clan’s tyranny. Her narrative resisted conventional tales of growth through struggle, instead validating dissent and the right to reject prescribed paths. Mai’s story persists as a testament to fractured loyalties, the weight of choice, and the scars left by systems that demand sacrifice without mercy.