The vanguard's first destination was Alfheim.
It was the realm of the Light Elves. Naturally radiant and inherently gifted in the arcane arts, they were a pacifist race, entirely averse to conflict.
Yet, war always found them. Such pure, untainted domains were eternal targets for conquerors.
Just as it was now. A raiding vanguard of Dark Elves had locked onto their borders, encroaching upon their ancestral groves, dragging the Light Elves into chains, and slaughtering any who resisted.
The Asgardian armada tore through the Bifrost, the golden warships carving brilliant, crystalline trajectories across the void of space.
Mavuika and Hela stood at the absolute prow of the flagship. Behind them stood three thousand heavily armored Asgardian elites, flanked by a vanguard of fifty Valkyries commanded by Brunnhilde.
This was Odin's deliberate design. Mavuika and Hela were to lead the strike force, plunging into the crucible of battle first.
The All-Father remained in the rear—acting both as a terrifying, looming deterrent and as the ultimate audience for his daughters' martial debut.
By the time the Bifrost shattered the skies over the combat zone, delivering the fleet, the battlefield was already painted in devastation.
The Dark Elves were never known for restraint. They were actively pushing deep into the largest Light Elf settlement. Silvery elven spires crumbled under volatile dark energy. Ancient forests withered into ash wherever the necrotic magic bled, the screeching laughter of the invaders weaving sickeningly with the cries of the fallen.
"I claim the vanguard!"
Hela hit the ground first. The kinetic shockwave of her impact alone violently threw five advancing Dark Elves backward into the dirt.
She did not even rise from her landing crouch. She simply slammed a palm into the earth. Necrotic energy flooded the soil, erupting upward as dozens of towering, jagged obsidian spikes that instantly impaled the charging Dark Elf infantry.
Twin shadow-blades coalesced into her grip as she vaulted forward, launching herself directly into the heart of the enemy encampment.
With every spinning arc of her blades, the dark green energy washed outward like a tidal wave. Wherever the necrotic tide touched, the Dark Elves' magical wards shattered like brittle glass. The marauders caught in the sweeping arcs dropped instantly, their life force entirely snuffed out.
Mavuika descended a heartbeat later. Her pale blonde hair caught the ambient thermal updraft, practically igniting into a corona of golden-red fire that burned brilliantly even against the gloom.
Concentrated thermal energy condensed in front of her, forging dozens of blinding, fiery lances. With a flick of her wrist, the lances rained down upon the densest clusters of the Dark Elf horde like a localized meteor shower.
BOOM!
Deafening kinetic explosions rocked the battlefield. The Dark Elf ranks were instantly decimated, entire squadrons vaporized in the blistering heat.
"Ambush! It is the cursed Asgardians..." a Dark Elf commander shrieked, frantically attempting to wheel his forces around.
Then, he looked up.
Mavuika hovered high above the carnage. She brought her palms together, pulling them slowly apart. A miniature, blinding sun ignited between her hands. It rapidly expanded, the sheer, suffocating luminescence instantly burning away the unnatural darkness choking the battlefield.
It brought the light back to the Elven domain, while simultaneously driving a stake of absolute, primal terror into the hearts of the invaders.
Staring up at that apocalyptic celestial mass, the Dark Elves realized their campaign was already over.
Their ranks completely shattered. They broke into a frantic, chaotic rout, sprinting for the tree lines in sheer panic, utterly convinced the miniature star was about to drop and melt the flesh from their bones.
Mavuika watched them scatter, her amber eyes reflecting the intense glare. She did not throw the sun. She did not pursue.
Hela, however, seized the utter collapse in their lines, darting through the retreating ranks and efficiently executing any stragglers with sweeping, lethal arcs of her shadow-blades.
Seeing the enemy entirely routed, Mavuika did not drop the terrifying mass of thermal energy onto the dirt. Detonating that mass would have inflicted catastrophic, irreversible damage to the ecosystem of Alfheim. If overwhelming force was not strictly necessary, she would not unleash it blindly.
Instead, she slowly closed her hands, systematically absorbing and neutralizing the raw heat back into her own core.
She drifted down to the scorched earth. Hela stepped up beside her, flicking her wrists to dissolve her twin necrotic blades back into mist.
"A rather tedious affair, Sister. The vanguard of this realm proved utterly fragile!"
Hela's posture was rigid with unspent adrenaline. The battle had ended before her blood even had the chance to properly heat up.
Only now did the primary Asgardian phalanxes begin touching down via the Bifrost's lingering channels.
The theater of war had already been entirely dismantled by the two princesses. The army's only remaining directive was to secure the perimeter and manage the battlefield cleanup.
The surviving Light Elves emerged from the rubble, approaching the sisters and bowing deeply in profound, trembling gratitude.
"Princess Mavuika. Princess Hela. We offer our deepest thanks for Asgard's intervention. The Elven courts shall etch this grace into our eternal memory!"
The liberation of Alfheim was merely the prologue.
Over the following three years, the Asgardian armada swept across the Nine Realms like an unyielding golden storm.
The two sisters spearheaded the vanguard, crushing opposition on battlefield after battlefield, planting the golden banners of Asgard deep into the soil of the realms.
Every single campaign forged a heavier, more terrifying reverence for the duo across the cosmos.
In the Dwarven Realm of Nidavellir, when the invading legions of Fire Demons attempted to breach the final defensive perimeter of the great forges, Mavuika dropped into the dead center of the siege like a blinding meteor.
The crust of the realm fractured. Countless veins of molten, golden-red thermal energy radiated outward from her point of impact, branching across the battlefield like the roots of a flaming tree. Wherever the fiery veins touched, the demonic invaders were incinerated, falling in massive, sweeping swaths like wheat before a scythe.
The Dwarven realm formally anchored itself to Asgard. King Eitri forged a binding alliance with Odin, securing eternal celestial protection for his people's forges.
On Midgard, human tribes were locked in brutal, endless cycles of primitive slaughter. The sight struck a heavy, familiar chord in Mavuika's chest—a sharp echo of the warring tribes of ancient Natlan.
She did not subject them to martial subjugation. Instead, she descended from the clouds, radiating the gentle, life-giving warmth of the primordial sun. She guided the tribal warlords, imparting the foundational knowledge of tilling the earth and forging steel, anchoring the truth that prosperity could only take root in the soil of coexistence.
Entirely overwhelmed by her wisdom and celestial presence, the human chieftains knelt. They elevated her as a Sun Deity, revered Asgard as the ultimate celestial realm, erected towering stone temples in her honor, and wove her intervention into the very fabric of their earliest mythologies.
In the frozen wastes of Niflheim and the shadowed valleys of Helheim, Mavuika's radiance actively burned away the suffocating, necrotic fog. The restless dead attempting to breach the borders of the living simply melted beneath her gaze.
Hela followed immediately behind her, unleashing her vast necrotic dominion. She seized absolute control over the fleeing spirits, chaining them to the realm with her own dark energy. She permanently sealed the borders of the underworlds, entirely severing the dead's capacity to invade the realms of the living.
Three years of unbroken campaigning. The borders and absolute authority of Asgard expanded at a terrifying velocity.
Aside from the Frost Giants of Jotunheim and the Fire Demons of Muspelheim—the two most violently stubborn and formidable giant factions—the remaining seven realms had all either bent the knee or signed binding treaties of alliance.
The titles of Asgard's "Sun Deity" and "Sovereign of Death" rippled through every dark corner of the Nine Realms, cementing themselves as universal, undeniable legends.
Elven poetry sang of Mavuika's light—how it mended the broken and birthed dawns from the darkest nights. Dwarven sagas spoke in hushed, reverent tones of Hela, describing her as a terrifying, elegant executor of the abyss. The historians of the Vanir meticulously recorded how the twin princesses suffocated a century-long border war in exactly seven days.
Even the captured insurgents rotting in the prisoner camps whispered in terrified, trembling tones about the blazing sun and the creeping shadow that stalked the battlefields.
High within the Golden Palace of Asgard, the grand star map was meticulously redrawn. The newly secured realms were etched in brilliant gold, pulsing with the steady, quiet rhythm of an enforced peace.