In his past life, Hamel was a mercenary known as "The Fool" who fought alongside the legendary Hero Vermouth before dying in the Demon King's castle. Reincarnated 300 years later into a branch line of the Lionhart family as Eugene, he retains his lethal combat instincts, pragmatism, and cynical disposition. Driven by an obsession to surpass Vermouth, solve the mysterious non-aggression treaty signed with the Demon Kings, and eliminate the remaining Demon Kings, Eugene relentlessly pushes his body beyond mortal limits. Combat abilities and traits: Master of the 10-Star White Flame Method, dual-wielding mastery, Ignition (forcing mana output beyond normal limits), Spirit Contracts with Tempest (Wind Spirit King) and Ignis (Fire Spirit King), wielder of the Holy Sword Altair, the Windstorm Sword Winnead, the Holy Sword Monica, and the Ashen Sword. Fluent in high-circle magic combined seamlessly with physical martial techniques.

Revered as humanity's absolute hero 300 years ago, Vermouth possessed flawless talent in every combat style, magic, and divine art. After Hamel's death, Vermouth sealed a mysterious pact with the Demon King of Incarceration rather than destroying Helmuth, disappearing from public record after founding the Lionhart Clan. His actions and true motives form the core overarching mystery of the world. Combat abilities and traits: Master of all martial arts, creator of the 10-Star White Flame Method, dual wielder of divine and demonic weapons, unmatched spatial manipulation, absolute mana mastery.

The greatest archmage in history and founder of Aroth's Green Magic Tower. In the era 300 years ago, she harbored deep, unconfessed feelings for Hamel while constantly bickering with him. Following the demon war, she fell into a deep slumber inside the World Tree to heal fatal wounds sustained during a betrayal by dark wizards and demons. Combat abilities and traits: 9th Circle Archmage, creator of Akasha (the ultimate magic staff), creator of intelligent familiars (Mer), absolute elemental and spatial magic control.

Anise Sate was the Saintess of Light 300 years ago who concealed her heavy drinking and fiery temper behind a pious front. Upon her death, her soul became anchored to the Holy Empire's secret vessel program. Kristina Rogeris is her modern reincarnated clone and candidate Saintess. After meeting Eugene, Anise's soul awakens inside Kristina's mind, allowing the two women to co-exist in one body and share divine powers. Combat abilities and traits: Eight Stigmata manifestation, absolute divine healing, angelic wing manifestation, high-tier sacred barriers, holy smiting.

The muscle-headed barbarian hero who founded the Northern Kingdom of Ruhr. Known for his overwhelming physical strength and fearless demeanor, Molon survived the ancient war and spent centuries silently guarding the northern peaks against the awakening of a monstrous primordial threat, maintaining his duty despite severe physical and mental isolation. Combat abilities and traits: Peerless physical durability, earth-shattering axe and unarmed strike techniques, absolute physical force projection, immunity to mental corruption.

The 45th Patriarch of the Lionhart Clan. Noble, fair, and intensely devoted to the honor of his family, Gilead recognizes Eugene's unmatched genius early on and breaks centuries of strict tradition to adopt him into the main family line. Combat abilities and traits: 6-Star White Flame Method master, master swordsman, expert strategist and administrator.

A formidable senior member of the Lionhart main branch and Captain of the 3rd Unit of the Black Lion Knights. Eccentric, obsessed with looking "cool," and constantly smoking cigars, Carmen acts as Eugene's primary martial mentor during his teenage years, deeply respecting his pragmatic approach to slaughtering monsters. Combat abilities and traits: 7-Star White Flame Method user, gauntlet and hand-to-hand combat specialist, massive explosive punch shockwaves.

The direct male heir of the main Lionhart lineage. Initially spoiled, arrogant, and hostile toward branch family members, Cyan matures rapidly after a humbling defeat at the hands of Eugene during the Blood Succession Ritual. He grows to idolize Eugene, striving endlessly to become a worthy successor and brother. Combat abilities and traits: Advanced White Flame Method, dual-sword technique, high-level fleet-footwork and family sword arts.

The twin sister of Cyan. Sharp, observant, and mischievous, Ciel initially watches Eugene out of family political duty, but quickly develops deep affection and romantic feelings for him as they grow up together. Combat abilities and traits: Fast dual-dagger and rapier combat style, White Flame Method user, agile reconnaissance combatant.

A branch family member obsessed with physical muscle enhancement, secret protein supplements, and the aesthetics of power. Despite his comically eccentric demeanor, he possesses an unshakeable sense of loyalty and warrior honor. Combat abilities and traits: Heavy broadsword style, custom potion brewing, high physical durability and strength-focused mana amplification.

A high-level artificial familiar created by Wise Sienna to guard the Royal Library Acryon in Aroth. Modeled after Sienna's childhood appearance, Mer possesses a sharp tongue and a snarky personality. She seals herself within Eugene's witch-craft pocket dimension to travel the world with him. Combat abilities and traits: Direct access to Sienna's spell database, high-speed spell calculation support for Eugene, immunity to mental attacks.

Master of the White Magic Tower in Aroth. Flamboyant, shameless, and obsessed with making elemental contracts, Melkith acts foolishly in public but is an undisputed genius of Spirit Magic and high-tier spellcraft. Combat abilities and traits: Contractor with multiple Spirit Kings (including Earth King Uriel), 8th Circle elementalist, wide-area Spirit Magic invocation.

Master of the Black Magic Tower in Aroth. Calm, polite, and deeply pragmatic, Balzac maintains a contract with the Demon King of Incarceration while working within human society, constantly balancing dark magic pursuits with his duties to Aroth. Combat abilities and traits: Master of Dark Magic, Necromancy, Black Mana manipulation, high-level curse weaving.

The Spirit King of Wind. Bound to the ancestral Lionhart sword Winnead, Tempest recognizes Eugene as the soul of Hamel and acts as a major mentor, revealing hidden truths about Vermouth's past. Combat abilities and traits: Absolute wind manipulation, hurricane generation, flight speed buffing, spiritual aura perception.

The Queen of the Night Demons (Succubi) and the 4th rank Demon King in Helmuth. Drop-dead gorgeous, twisted, and deeply sadistic, Noir becomes insanely obsessed with Eugene after discovering he is the reincarnation of Hamel, viewing him as her ultimate plaything. Combat abilities and traits: Absolute Illusion Realm creation, dream invasion, mind control, spatial tearing through blood magic, high-immortality demonic regeneration.

The ruler of Helmuth and the second most powerful Demon King in history. Cold, enigmatic, and omniscient, he forced the original human heroes into a non-aggression contract 300 years ago for reasons tied to the universal balance and the impending resurrection of Destruction. Combat abilities and traits: Absolute Chains of Incarceration (negates all magic, divine power, and mana), spatial imprisonment, omniscient vision across realms, absolute dark authority.

The mindless, absolute concept of devastation given form. Located at the abyssal heart of Helmuth, the Demon King of Destruction does not hold conversations or make pacts; its mere existence passively erodes the reality of the world. Combat abilities and traits: Universal annihilation aura, absolute destruction force, complete immunity to concepts of life, divine light, or magic.

A half-demon Dark Elf hybrid and daughter of the deceased Demon King of Fury. Driven by immense spite, jealousy, and revenge, she commands rogue dark elf factions and allied demonic forces to disrupt human realms and regain her father's lost authority. Combat abilities and traits: Demonic blood-flame control, dark spear technique, corrupted spirit invocation, high-speed flight.

The eldest biological son of Gilead Lionhart. Possessing poor talent in the White Flame Method and crushed by family pressure, Eward falls prey to dark wizards, consuming demonic drugs and black magic to overcome his insecurities, ultimately turning into a tragic monster. Combat abilities and traits: Demonic mana corruption, dark spirit summoning, unstable high magic output.

The genial Master of the Red Magic Tower in Aroth. Recognizing Eugene's extraordinary genius early during the succession ritual, he facilitates Eugene's entry and unrestricted research within Aroth's grand magic institutions. Combat abilities and traits: 8th Circle Archmage, fire and destruction magic specialization, high-tier spell formulation.