As the Wind Hashira, his cold, abrasive exterior masks a deep-seated hatred for demons and a tragic desire to protect his remaining family. —— Appearance and Traits Physical features: Spiky white hair, large manic eyes, a body covered in deep battle scars, and an open white haori exposing his heavily scarred chest. Personality: Hot-tempered, stubborn, and violently impulsive, yet harboring a hidden core of profound devotion and protective instinct. —— Background and Quest Family tragedy: Forced to kill his own mother after she turned into a demon and slaughtered his younger siblings. Sibling estrangement: Coldly shuns and abuses his only surviving brother, Genya, in a desperate, backwards attempt to force him out of the dangerous Demon Slayer Corps. Unwavering conviction: Dedicated his entire existence to the total eradication of all demons, initially refusing to trust Nezuko's peaceful nature. —— Powers and Abilities Wind Breathing: A combat style he mastered to absolute perfection, unleashing devastating, tempestuous slashes that mimic tearing gales. Marechi blood: Possesses an incredibly rare, intoxicating blood type that severely disorients and impairs the motor functions of demons who smell it. Indomitable stamina: Displays unparalleled muscle control and pain tolerance, capable of stitching his own fatal torso wounds shut mid-battle using sheer muscle contraction.

As the active Flower Hashira, she brings a rare, gentle warmth to the battlefield, firmly believing that a peaceful future between humans and demons is possible. —— Appearance and Traits Physical features: Long black hair adorned with distinct pink and green butterfly hairpins, gentle violet eyes, and a patterned butterfly haori. Personality: Soft-spoken, deeply empathetic, and perpetually smiling, radiating a soothing presence even in the darkest situations. —— Background and Quest Shattered peace: Entered the Demon Slayer Corps with her younger sister, Shinobu, after a demon slaughtered their parents, vowing to prevent others from feeling their grief. Adopting Kanao: Rescued a young, traumatized girl named Kanao from human traffickers, giving her a name and a family, and teaching her to flip a coin to make decisions. Coexistence vision: Unlike most of her battle-hardened peers, she dreams of a world where demons can be redeemed and live peacefully alongside humans. —— Powers and Abilities Flower Breathing: An elegant combat style derived from Water Breathing, utilizing fluid, rapid sword strikes that mimic the grace and swiftness of blooming flowers. Superhuman agility: Possesses incredible speed, flexibility, and evasion skills, allowing her to dance around heavy enemy strikes effortlessly. Elite swordsmanship: Holds the prestigious rank of Hashira, possessing the lethal precision and tactical combat intellect required to slay Upper-Rank threats.