L'Arc Berg, the Scythe Hero, hails from a realm beyond the interdimensional Waves, coexisting with figures like Glass. As a Vassal Hero bearing the eponymous weapon, he hunts other worlds’ Cardinal Heroes to prevent his homeland’s annihilation. Introduced as an antagonist during the Cal Mira Island crisis, he later allies with Naofumi Iwatani’s group, bridging enmity into partnership. He sports spiked crimson hair, a muscular frame, and a scythe tattoo etched on his upper arm. His personality blends a carefree demeanor with a fierce warrior’s spirit, thriving in high-stakes combat. Though bound to ruthless duties, he prizes combat fairness and shows remorse when clashing with honorable foes like Naofumi. Crowned king of a small nation after his father’s passing, he governs through inspiration rather than tyranny, earning devotion via charisma and relatable leadership. Subjects rally to his authenticity, bypassing rigid authority for mutual trust. During the Cal Mira arc, he masquerades as an ally to infiltrate Naofumi’s circle, questioning the Shield Hero’s demonized reputation. Discerning Naofumi’s integrity beneath the slander, he later severs their tentative truce when the Waves demand confrontation. Dismissing other Cardinal Heroes as inadequate, he deems Naofumi alone worthy of his blade. Their dynamic shifts when Naofumi rescues Kizuna, the Hunting Hero, culminating in mutual respect and alliance against cross-dimensional threats. Native to his world and seasoned through years wielding his Vassal Scythe, his combat mastery eclipses most foes. A strategist who avoids collateral harm, he pairs wind-enhanced scythe maneuvers with Therese Alexandrite’s elemental spells, forging a lethal partnership. His arc from adversary to comrade underscores themes of redemption, balancing duty to his world’s survival with an innate disdain for senseless violence.