In her previous life, she was "Ilhwa," a weapon forged through agony by the Blood Demon, only to be betrayed and executed. Reborn into her thirteen-year-old body, Seolhwa is calculating, hyper-vigilant, and unyieldingly pragmatic, possessing the lethal battlefield experience of a demonic sovereign paired with the noble lineage of the Namgung Clan. She is driven by a singular imperative: purge her body of corruptive blood qi, liberate herself from the subconscious mental shackles placed upon her by her former master, and prevent the annihilation of the Namgung family. Rather than adhering to orthodox passivity, she adopts an aggressive, subversive tactical mindset that challenges both demonic assassins and stagnant family elders. Powers: Wielder of the ultra-rare Heavenly Martial Physique (Cheonmuche) unlocked via Bone Marrow Cleansing. Master of the Azure Sky Great Evolution Divine Art and the creator of the unorthodox Counter Sword path, engineered specifically to dissect and exploit the blind spots of standard Jianghu sword forms. Possesses refined Sword Blade (Geomgang) projection and wields the ancestral Mangeon Sword. Reached the Peak/Pinnacle Realm at age thirteen.

Known throughout the martial world as the "Heavenly Dragon Sword Emperor," Mucheon is the supreme Patriarch of the Namgung Clan and one of the Ten Great Masters of the Central Plains. Stoic, majestic, and uncompromising in matters of clan honor, he initially views Seolhwa's sudden emergence with tactical caution. However, witnessing her innate genius and unyielding spirit awakens his deep, fiercely protective grandfatherly instincts. Despite his strict traditionalism, he is willing to risk his own internal cultivation to cleanse her meridians and shield her from both internal court vultures and demanding foreign sect elders. Powers: Master of the Heavenly Dragon Imperial Sword Art, capable of releasing devastating, sky-rending Sword Gangqi with absolute precision. Cultivation situated firmly within the upper tiers of the Transcendence Realm (Hwagyeong), giving him an overwhelming spiritual aura capable of suppressing First-Rate and Peak masters through mere presence.

The sinister, omnipotent sovereign of the Blood Cult who raised Seolhwa as a tool of slaughter in the previous timeline before discarding her. Cold, sadistic, and possessing profound mastery over esoteric mind-manipulation techniques, he views human beings merely as vessels for demonic cultivation and geopolitical chess pieces. Even across time and space, his lingering psychological Suggestion Curse haunts Seolhwa’s psyche, designed to force her into murdering her own kin whenever her emotional defenses falter. Powers: Supreme master of the Blood River Heavenly Demonic Art, utilizing blood manipulation, parasitic qi contamination, and spiritual mental intrusion. Direct commander of the elite "Twelve Moons" covert strike force.

The First Disciple and top prodigy of the Huashan Sect. Beneath his carefree, easygoing, and often irreverent demeanor lies a martial savant with an exceptionally sharp strategic mind and an unyielding sense of chivalry. Initially dispatched to Hefei during a tense diplomatic standoff, his clash with Seolhwa shatters his complacency. After tasting defeat against her revolutionary Counter Sword, he sheds his arrogance, forging a fierce mutual respect with her and serving as an essential orthodox bridge between Huashan and the Namgung Clan. Powers: Master of the Small Clear Sword and the high-tier Plum Blossom Sword Technique, producing blindingly fast multi-directional sword petals infused with sharp, cutting Sword Qi. Cultivation at the First-Rate threshold approaching Peak Realm.

A battle-hardened, disciplined swordsman from the elite Black Dragon First Sword Unit. Assigned to act as Seolhwa's personal escort upon her arrival at the main clan estate, he initially harbored skepticism toward protecting a young girl. However, after witnessing her combat efficiency, master-level sword intent, and decisive tactical brilliance, his skepticism turned into unwavering, fanatical devotion. He stands as Seolhwa's most dependable lieutenant within the estate's complex hierarchy. Powers: Expert in the standard Namgung Heavy Sword Style and specialized Black Dragon assault formations. First-Rate martial artist specializing in heavy, defensive sword aura and vanguard shock-combat.

The ambitious Second Young Master of the Namgung Clan. Raised under the expectation of inheriting clan supremacy, he is deeply entitled, politically Machiavellian, and threatened by any disruption to the succession ladder. Seolhwa’s unexpected return and immediate favor with Patriarch Mucheon inflames his insecurity, leading him to covertly conspire with corrupt elders and spread destabilizing rumors to delegitimize her standing. Powers: Formally trained in the core Namgung Azure Cloud Sword Arts, possessing solid Second-Rate to lower First-Rate internal energy, augmented by elite lineage resources.

A deep-cover operative of the Blood Cult's Twelve Moons who infiltrated the Namgung Clan under the guise of an orthodox Medicine Hall Master. Deceitful and patient, he used his medical authority to subtly poison clan prodigies and gather intelligence on Patriarch Mucheon until exposed and eradicated by Seolhwa's past-life insight. Powers: Expert in Demonic Corpse Toxins, hidden concealed needles, and meridian-blocking poisons; utilizes low First-Rate demonic stealth footwork.

A lethal, cold-blooded assassin belonging to the Blood Cult's elite Twelve Moons. Dispatched to eliminate Seolhwa when her purges disrupt the cult's plans in Anhui Province, Pawol operates strictly on ruthless efficiency. During their duel in the wilderness, he is utterly outmatched by Seolhwa's counter-tactics, ultimately being spared to carry a terrifying declaration of war back to the Blood Demon. Powers: Master of the Shadow Blood Step and specialized dual crescent daggers coated in lethal blood-corroding Qi; First-Rate assassin tier.