Originally an unranked spy of the Blood Cult murdered after ten years of servitude, Soh Woonhwi regresses into the past with his memories intact and awakens the "Absolute Sword Sense." Cautious, fiercely analytical, and pragmatic, Woonhwi abandons blind loyalty to forge his own destiny, climbing from low-ranking captive to undisputed leader of the Blood Cult and a legendary figure across the Murim. Powers: Absolute Sword Sense (weapon spirit communication and memory reading), Golden Eye (spiritual insight and illusion breaking), Southern Heaven Sword Arts, Flying Dagger Techniques of Han Jisang, Blood Demon Divine Art, Transcendent/Supreme Realm cultivation.

The eccentric, short-tempered, and physically towering Fourth Supreme Elder of the Blood Cult. Infamous for his violent personality and brutal training methods, he values genuine talent and martial grit above noble pedigree. Underneath his explosive exterior, he harbors deep loyalty and protective affection toward his chosen disciples. Powers: Supreme Realm fist and internal arts, Grand Destruction Fist Arts, monstrous physical strength, and immense life-energy resilience.

The lingering soul residing within a worn iron sword, once wielded by the legendary Southern Heaven Swordsman. Calm, experienced, and deeply knowledgeable about orthodox swordsmanship and Murim history, the Iron Sword serves as Woonhwi’s primary combat counselor, internal energy guide, and closest confidant. Powers: Transmission of the Southern Heaven Swordsmanship, sensory detection of surrounding killing intent, real-time tactical analysis during duels.

The ancient, bloodthirsty weapon spirit of the foundational Blood Cult patriarch. It attempts to drive every wielder into homicidal insanity through demonic possession. After being subjugated by Woonhwi's sheer psychic will in their mental clash, it begrudgingly recognizes Woonhwi's bloodline and assists him with destructive demonic martial arts. Powers: Blood Demon Blade Arts, demonic aura amplification, blood-essence absorption, lethal mental corruption waves.

A fierce, ambitious, and highly capable martial prodigy who claims direct lineage to the Blood Demon. Initially clashing with Woonhwi over the rightful succession of the cult, she relies on sharp political maneuvering and immense combat prowess. After being defeated and outmaneuvered by Woonhwi, she acknowledges his legitimacy and becomes the Vice Leader of the reformed cult. Powers: High Peak/Transcendent cultivation, Blood Arts, master-level swordsmanship, high-level political espionage.

The talented daughter of Sama Chak (the Evil Moon Sword). Initially disguising her gender and true identity to navigate dangerous factional conflicts, she joins Woonhwi's command squad. Sharp-witted, fiercely loyal, and protective, she becomes Woonhwi’s trusted right hand and develops deep romantic feelings for him. Powers: Evil Moon Clan stealth and assassination arts, agile twin-blade swordsmanship, exceptional reconnaissance.

A hot-headed, straightforward martial artist captured alongside Woonhwi in Six Blood Valley. Chosen as Hae Akcheon's second disciple, his initial jealousy toward Woonhwi rapidly evolves into profound mutual respect and unbreakable brotherhood. Powers: Fist arts, iron-body conditioning techniques taught by Hae Akcheon, Peak Realm combat proficiency.

The twin brother of Song Jwabaek. More reserved and thoughtful than his brother, he serves diligently in Woonhwi's core squad, providing reliable frontline combat strength and tactical stability. Powers: Peak-level internal energy, heavy blade techniques, defensive formation combat.

A supreme master of the Eight Flowing Shadows known throughout the realm as the "Ruthless Divine Wind." Believing his son died years ago, their dramatic reunion transforms him into a supportive father who passes down the lost records of the Sword Immortal. Powers: Transcendent/Supreme Realm swordsmanship, extreme wind-attribute sword techniques, formless sword projection.

Leader of the Four Evils and the father of Sama Yung. An imposing, terrifying figure of absolute strength who respects only power and conviction. He tests Woonhwi through harsh trials before formally accepting him as a worthy partner for his daughter and an ally against ancient conspiracies. Powers: Supreme Realm moon-attribute sword arts, devastating aura pressure, transcendent footwork.

A member of the Five Evils known for his devastating, spectral hand-to-hand arts. Formerly manipulated and brainwashed by the shadow syndicate "The Lord," he is liberated following his defeat by Woonhwi and pledges his fists to Woonhwi's faction. Powers: Ghost-Slaying Fist technique, Supreme-tier hand-to-hand martial arts, body reinforcement.

An ancient, sinister member of the Five Evils who prolongs her lifespan through body snatching, soul transference, and human puppetry. When she attempts to invade and conquer Woonhwi’s mindscape to take over his youthful vessel, her soul is crushed and absorbed by Woonhwi. Powers: Soul Transference, Puppetry Arts, Mental Illusions, ancient occult poisons.

A legendary assassin trapped inside a sealed subterranean cave beneath Highrock Peak. On the verge of death, he encounters the fallen Woonhwi, passing down his short-sword spirit companion, life-energy, and supreme flying dagger martial arts. Powers: Supreme Flying Dagger Techniques, spatial trajectory manipulation, pure assassination arts.