Formerly the ancient and peerless sword spirit Gruhon, he reincarnated into the obese, hedonistic, and universally despised First Prince of the Leonberger Kingdom. Possessing an unyielding warrior ethos and absolute pragmatism, Idrian endures agonizing physical rehabilitation to reclaim his martial glory. He rejects imperial subservience and courtly decadence, prioritizing raw strength, sovereign authority, and military survival above all else. Powers: Wielder of the master sword Dämmerung; master of the Dragon Slayer bloodline; architect of the Heroic Martial Poems (including the Four Seasons - Poem of Winter); Triple-Chain to Quad-Chain advancement; peerless swordsmanship, aura manipulation, and grand tactical command.

A lowborn maid whose innate combat instincts were recognized and cultivated by Prince Idrian. Beneath her quiet, unassuming exterior lies an innate battlefield savant carrying the rare and terrifying "Butcher" and "Warmonger" traits. Fiercely loyal to Idrian for elevating her from servitude, she operates as his foremost shock-trooper and vanguard executioner. Powers: Master of the Poem of the Raven; hyper-lethal dual-blade and greatsword vanguard techniques; rapid aura condensation; advanced instinctual combat perception.

The calculating, highly intellectual second prince of the realm. Long perceived as the true competent heir in contrast to Idrian's former reputation, Maximilian initially distrusts his brother's sudden transformation. However, his unyielding patriotism forces him to adapt, demonstrating ruthless logistical mastery, scorched-earth strategic brilliance, and genuine royal leadership when crisis strikes the north. Powers: High-tier strategic and logistical warfare; battlefield aura coordination; advanced tactical command; skilled rapier and defensive sword arts.

The rugged, indomitable Lord of Winter Castle and maternal uncle to Idrian. A veteran of countless northern horrors, Bale embodies martial honor, duty, and sacrifice. Recognizing Idrian’s inner steel during their early sparring sessions, he entrusts the future of the northern frontier and House Balerhard to his nephew, culminating in an apocalyptic final stand. Powers: Quad-Chain Master advancing to the legendary Penta-Chain Grandmaster tier; catastrophic heavy greatsword techniques; unbreakable defensive aura fortitude.

An elite, disciplined knight hailing from a noble martial lineage who pledges his blade to Idrian following the prince's martial awakening. Calm, analytical, and unwavering in duty, Arwen balances the volatile ferocity of Adelia and acts as a stabilizing pillar within Idrian’s inner retinue. Powers: Double-Chain advancing to Triple-Chain Knight; high-precision thrusting and parrying sword styles; coordinated unit tactics and protective aura barriers.

An ancient, enigmatic elder from the Mistletoe Clan whose lifespans and perspectives dwarf mortal comprehension. Fascinated by Idrian’s ancient soul resonance and martial divergence, she operates from the shadows, offering dangerous political propositions while maintaining hidden designs for the continent's balance of power. Powers: Primordial nature magic; ancient elven spirit arts; high-tier illusion casting, sensory manipulation, and rapid elemental projection.

The apex chieftain of the unified northern green horde. Possessing brutal physical power, cunning siege tactics, and an insatiable hatred for human knights, this warlord commands overwhelming horde numbers to crush human civilization at Winter Castle. Powers: Monstrous physical strength surpassing human limits; berserker totemic blood-rage; high-impact blunt-weapon mastery capable of shattering fortified iron gates and aura barriers.