When a God of Destruction Was Reincarnated in Tensura:

The second wave of Artemis's army emerged from countless new portals, even larger and more chaotic than before. The air itself seemed to ripple as more powerful and terrifying creatures stepped forth, their mere presence radiating destruction. These minions were far more dangerous than the first wave, brimming with chaotic energy and devastating abilities designed to break through even the most disciplined defenses.

Oblivion Titans: Towering monsters, each over a hundred feet tall, stomped through the cardinal world, their steps causing earthquakes that leveled entire towns. Their bodies were made of dark crystalline material, nearly impervious to most attacks. They unleashed beams of chaotic energy from their cores, obliterating everything in their paths.

Eclipsed Wraiths: These spectral beings moved through barriers as if they didn't exist, phasing into the ranks of the defenders and causing mass confusion. They drained life force and magicules from their victims, growing stronger with every life they consumed.

Chimeric Ravagers: Horrifying amalgamations of various beasts, the Chimeric Ravagers were fast, intelligent, and relentless. Each one possessed abilities unique to its form—fire breath, venomous claws, and even magical barriers of their own.

Chaos Heralds: Leading the charge were powerful humanoid figures shrouded in dark energy. These generals of Artemis's army wielded terrifying magic and commanded entire legions with ruthless precision. Each Chaos Herald was a match for even the strongest of the allied forces, requiring multiple combatants to bring them down.

Rimuru's Strategic Command

Rimuru, observing the escalating situation from Tempest's central command hub, maintained his composure. Using Thought Communication, he reached out to the other Demon Lords and commanders on the battlefield.

"Don't exhaust yourselves completely," Rimuru's calm yet firm voice resonated in their minds. "Artemis himself hasn't shown his hand yet. Conserve your energy—this is only the beginning."

The Demon Lords acknowledged his advice, though the intensity of the battle was testing their patience.

True to Feldway's promise, a massive golden portal appeared above the cardinal world, shimmering with divine light. From it descended the angelic army, their presence immediately shifting the balance of the battlefield.

The Angel Legions: Clad in radiant armor and armed with celestial weapons, the angelic soldiers were a stark contrast to Artemis's dark and chaotic minions. Their disciplined formations and synchronized attacks were devastatingly effective, pushing back the invading forces.

Archangel Leaders: Among the angels were several high-ranking commanders, each wielding unique divine abilities. They directed their troops with unmatched precision, their auras bolstering the morale of the allied forces.

Feldway, Zalario, and Zelanus did not descend themselves, as per Beerus's command, but their influence was felt through the angels they had sent.

The battlefield turned into a chaotic tapestry of light and darkness as the allied forces and the angelic army clashed with Artemis's second wave.

The Eastern Empire's Contribution

Rudra and Velgrynd stood as immovable pillars in the defense. Rudra's Unlimited Imprisonment created massive zones where the enemy's chaotic energy was suppressed, allowing his soldiers to strike more effectively. Velgrynd unleashed her fiery wrath, her flames countering the Chaos Heralds' magic.

"This is nothing we can't handle!" Velgrynd declared as she tore through a group of Oblivion Titans with her fiery breath.

The Demon Lords' Adaptation

The Demon Lords, now more attuned to their newly evolved skills, fought with a level of precision and ferocity that left even the Chaos Heralds struggling.

Guy Crimson: Guy's Azazel, Sovereign of the Eternal Abyss, unleashed waves of freezing energy that stopped even the Oblivion Titans in their tracks. His sharp mind allowed him to predict the enemy's movements, coordinating with the allied forces to minimize casualties.

Milim Nava: Milim's Vritra, Wrath Incarnate turned her into a whirlwind of destruction. She punched through the chest of a Chimeric Ravager, laughing wildly as its body exploded into shards of chaotic energy.

Luminous Valentine: Luminous used Lilith, the Queen of Temptation to charm and dominate the Eclipsed Wraiths, turning them against their own allies. Her vampiric magic drained their chaotic energy, which she converted into shields for her soldiers.

Leon Cromwell: Leon's Solom, Bringer of Light and Judgement summoned radiant swords that pierced through even the strongest Chaos Heralds. His cool demeanor and sharp tactics allowed him to protect weaker forces while dealing devastating damage.

Draguel: Draguel's Khaos, the Annihilator unleashed seismic shockwaves that shattered the ground beneath the invaders. His raw strength allowed him to grapple and crush even the Oblivion Titans.

Benimaru: Leading Tempest's main forces, Benimaru's Hellflare Barrage incinerated countless minions, his strategic mind ensuring that every attack hit its mark.

Diablo: Diablo's Flame of Ruin devastated the Chaos Heralds, and his cunning ensured that his enemies never saw their demise coming.

Zegion: Acting as an unyielding wall, Zegion's defensive abilities protected the angelic army's flanks, while his counterattacks crushed his foes.

Shion: Shion's devastating swordsmanship and raw strength made her a nightmare for the invading forces. Her laughter rang out as she cleaved through Chimeric Ravagers.

Veldora: Veldora's dragon form dominated the skies, his breath weapon obliterating large swaths of enemies in one go. "This is what I live for!" he roared.

Despite the combined might of the allied forces and the angel army, Artemis's minions continued their relentless assault. The battlefields across the cardinal world became scenes of both hope and despair. Each victory felt hard-won, and each loss a reminder of the stakes they faced.

Rimuru observed the ongoing battle, his expression serious but unwavering. "This is just the beginning," he muttered. "Stay strong, everyone. The real fight is yet to come."

Meanwhile, in his dimensional rift, Artemis laughed as he observed the chaos he had unleashed. "Yes… resist with everything you have," he mused. "It will make your eventual despair all the more delicious."

In his ethereal realm, Beerus lounged comfortably on an ornate golden throne, surrounded by his wives: Zerna, Erza, Velzar, Beta, Delta, and Sigma. The atmosphere was calm yet charged with anticipation, a stark contrast to the chaos erupting in the cardinal world. Each wife radiated her unique presence, their combined aura rivaling the most powerful beings in existence.

Zerna, the sharp-eyed tactician, leaned forward slightly, her piercing gaze locked on the swirling chaos of the battle displayed in an immense crystalline projection hovering before them. "They've grown much stronger since the last time we observed them. Rimuru's influence is undeniable," she commented, her voice tinged with approval.

Erza, the fiery and battle-hardened warrior, crossed her arms, her crimson hair glowing faintly as she analyzed the battle. "Strong, yes. But Artemis's forces are relentless. This second wave is far more destructive. If they're not careful, even the Demon Lords might struggle."

Velzar, the serene and enigmatic wife, exuded an aura of calm as she observed the battle with quiet interest. "They're adapting quickly, especially Rimuru and Milim. Their potential is immense, but the chaos Artemis is unleashing will test their limits."

Beta, with her analytical mind, studied the strategies employed by both sides. "The allied forces are holding for now, but Artemis's second wave has disrupted their formations in some areas. They'll need to adjust quickly to avoid significant losses."

Delta, playful yet astute, chuckled softly. "The angels arrived just in time to balance the scales. I wonder how Feldway feels about his troops being used like this. He always hated playing second fiddle."

Sigma, the calm and calculating observer, added with a faint smile, "Artemis is playing a long game. He's testing their resilience, their coordination. This is far from over."

Beerus, relaxed and unbothered, took a sip from a goblet filled with celestial nectar. His golden eyes glimmered with amusement as he watched the unfolding battle. "They're doing fine. Rimuru's strategy is holding up, and the Demon Lords are starting to understand the gravity of what they're facing. Let them struggle—it will only make their eventual triumph more satisfying."

Erza turned to him, raising an eyebrow. "You seem unusually confident, even for you. Aren't you worried about Artemis's forces overwhelming them?"

Beerus smirked lazily. "Worried? Hardly. Artemis is strong, but I've seen stronger. Besides, this is entertaining. Watching them grow, adapt, and fight back—it's all part of the spectacle. Rimuru and his allies will survive. If they don't… well, I'll step in, but only if it gets truly boring."

Zerna tilted her head. "You really believe Rimuru and the others can handle Artemis's army? Even the Chaos Heralds seem formidable."

"Of course," Beerus replied, his voice carrying absolute certainty. "Rimuru has more potential than even he realizes. And as for the Demon Lords, their newly evolved skills are a sight to behold. Let's see how far they can push themselves."

As the second wave continued to ravage the cardinal world, Beerus's wives turned to him with questioning looks.

"Will you truly just watch?" Velzar asked softly, her tone carrying a hint of concern.

Beerus leaned back, his smirk widening. "For now, yes. This is their fight, their moment to grow. If Artemis himself steps in, maybe I'll pay him a visit. Until then, let's enjoy the show."

And so, the battle raged on, the fate of the cardinal world hanging in the balance as both sides pushed themselves to their limits.