3. a great disaster, and end of demon lord ryouma

Nyxarion was living with tatsuya. When ryouma found out that Nyxarion was living with tatsuya, he sended his most powerful creature Gaiorox, Titan of the Shattered Lands

An great disaster was coming Nyxarion sensed it's appearance.

He was afraid of it

"No...no...no.... This can't happen"

He immediately told tatsuya to leave that place but tatsuya said

"You are a former demon lord and you can easily defeat it"

But Nyxarion denied because he was no longer demon lord the throne and perpal ring that contains the power of controlling creature was no longer his. Tatsuya said

"If it is attacking us we should fight"

They picked up their weapons some time later

The ground trembled as an unnatural storm of dust and molten rock swept across the battlefield. In the heart of the chaos stood Gaiorox, the Titan of the Shattered Lands—a monstrous fusion of dragon and stallion. His massive, equine body was forged from blackened stone, his scales glowing with veins of molten lava. His dragon head, adorned with jagged obsidian horns, exhaled plumes of searing fire.

Standing before him were Tatsuya, Misaki, and the exiled former Demon Lord Nyxarion, now living among humans after being dethroned by Ryouma. But Gaiorox had not come for him alone. His orders were clear: Destroy them all.

Behind Tatsuya, his daughter Himawari stood tall, her perpal hair flowing in the wind and her golden eyes were glowing. A warrior in her own right, she wielded a radiant spear of lightning. "You won't take another step forward!" she declared, her electric aura crackling against the scorched air.

Gaiorox's molten eyes fixated on her. A low, rumbling chuckle escaped his throat. "Foolish child," he growled. "You will be the first to fall."

With a roar, he stomped his massive hooves, sending shockwaves through the battlefield. The earth split apart beneath Himawari, lava spewing forth. She leaped into the air, barely avoiding being swallowed by the molten fissures. Twirling her spear, she hurled a lightning-infused strike toward the titan's chest.

It struck—but barely fazed him. Gaiorox surged forward, faster than anyone expected. His massive tail, formed of boulders and magma, whipped around, striking Himawari midair. The force sent her crashing into a crumbling ruin.

"HIMAWARI!" Tatsuya and Misaki screamed.

Before she could recover, Gaiorox reared up on his hind legs, then slammed down. A massive spire of jagged rock erupted from the ground, impaling Himawari through the stomach. Blood splattered onto the battlefield as her eyes widened in shock.

Tatsuya's heart stopped.

Himawari gasped, her trembling hand reaching toward her father. "D-Dad…" she whispered before her body went limp, the life fading from her eyes.

Silence.

Then… a deafening crack of thunder.

Tatsuya's aura exploded. His grief twisted into pure, unrelenting fury. Ice and lightning surged around him, turning the battlefield into a storm of frozen wrath. Beside him, Misaki's wind magic howled like a tempest, her white sword glowing with deadly intent.

Gaiorox stomped forward, unshaken. "Come then, insects," he taunted. "Face your end."

But he had underestimated them.

Tatsuya vanished in a flash of lightning, reappearing above Gaiorox. He slashed downward, his ice blade cutting deep into the titan's molten armor. Steam erupted where the blade met lava, but Tatsuya didn't stop. He unleashed a barrage of lightning-fast strikes, freezing parts of Gaiorox's body with each blow.

Misaki darted between the titan's massive legs, her wind-enhanced speed allowing her to dodge his earth-shattering stomps. She lunged, slicing through Gaiorox's knees with razor-sharp gusts, making the giant beast stagger.

Enraged, Gaiorox inhaled deeply, then unleashed a torrent of dragonfire. The flames roared toward Tatsuya, but Misaki acted fast. She summoned a barrier of violent winds, splitting the firestorm in half.

Now was their chance.

Tatsuya charged his blade with the full force of his ice and lightning magic, while Misaki gathered a whirlwind of razor winds around her sword.

With a final cry, they struck together.

Tatsuya plunged his ice sword into Gaiorox's chest, freezing his molten core. At the same time, Misaki's blade slashed through the titan's neck with a cyclone of cutting gales.

A deafening roar shook the heavens as Gaiorox's body cracked apart. His molten veins solidified into lifeless stone. His colossal form crumbled, reduced to nothing but broken rock and fading embers.

The battle was over. But victory felt hollow.

Tatsuya fell to his knees beside Himawari's lifeless body, his shoulders shaking. Misaki knelt beside him, tears streaming down her face. Nyxarion stood silently, his hands clenched into fists.

Above them, the sky remained dark, as if mourning the fallen.

This war was not over. Ryouma would pay.

And Tatsuya would stop at nothing to make him suffer.

Nyxarion said that himavari can heald but for that he need his throne and ring back. Immediately tatsuya went to demon lord's castle

The obsidian throne room of Demon Lord Ryouma trembled as the heavy doors burst open. A cold gust swept through the chamber, frost creeping across the black stone floor. Tatsuya Raikiri stood at the entrance, his ice sword glowing with a furious blue aura, his body crackling with lightning. His eyes—once filled with warmth—now burned with vengeance.

Ryouma, clad in a regal black-and-gold cloak, smirked as he sat upon his dark throne. His crimson eyes gleamed with amusement. "So, you've finally come," he said, his voice smooth yet mocking. "I was hoping you'd crawl here sooner. Have you come to beg? To die?"

Tatsuya's grip on his sword tightened. Memories of Himawari's lifeless body, pierced by Gaiorox's stone spike, flashed in his mind. His rage surged like a violent storm. "I'm not here to beg," he growled. "I'm here to make you suffer."

Ryouma chuckled, standing from his throne. Shadows coiled around him, his demonic aura distorting the air. "Bold words from a grieving father. Let's see if you can back them up."

In an instant, Ryouma vanished. Tatsuya barely had time to react before a clawed hand slashed at his face. He dodged, flipping backward as a wave of dark energy exploded where he once stood. The sheer force cracked the walls.

Tatsuya retaliated, dashing forward with lightning speed. His sword, now infused with both ice and lightning, slashed toward Ryouma's chest. But the demon lord conjured a black-bladed katana, parrying effortlessly. Sparks erupted as their weapons clashed.

The battle turned into a whirlwind of deadly strikes.

Ryouma's movements were like a shadow—swift, unpredictable. His katana weaved through the air, slashing with precise, deadly intent. But Tatsuya was faster. His lightning magic enhanced his reflexes, allowing him to dodge by mere inches, countering with devastating blows.

The floor shattered beneath them as their magic collided.

Ryouma smirked. "Impressive. But you're not the only one with power."

He raised a clawed hand, and the room darkened. The walls bled shadows, twisting into nightmarish creatures. Demonic tendrils lashed out, aiming to ensnare Tatsuya.

But Tatsuya was done playing games.

He planted his foot down, and a massive surge of lightning erupted from his body, shattering the tendrils and lighting up the chamber like a storm. The ice beneath his feet spread rapidly, freezing the demons into brittle statues. With a single swipe of his sword, they shattered into dust.

Ryouma's smirk faltered.

Tatsuya's eyes locked onto him. "This is for my daughter."

In a flash, he closed the distance, delivering a devastating slash across Ryouma's chest. The demon lord staggered, black blood spilling onto the floor.

Snarling, Ryouma unleashed a storm of dark fire. The entire throne room was engulfed in raging black flames, consuming everything in their path.

But Tatsuya didn't flinch. He plunged his sword into the ground. A pulse of icy magic erupted, freezing the fire mid-air, turning it into falling shards of obsidian ice.

Ryouma's eyes widened.

Tatsuya appeared before him in an instant, his sword glowing with overwhelming energy. "Die."

With a final, thunderous strike, Tatsuya drove his blade through Ryouma's heart. A massive surge of lightning and ice exploded outward, engulfing the demon lord in a storm of pure destruction.

Ryouma let out a final, agonized scream before his body disintegrated into nothingness.

Silence fell over the ruined throne room.

Tatsuya stood over the remnants of the demon who had taken his daughter from him. His breath was heavy, his hands trembling.

After that Nyxarion took his ring and cured himavari

To be continued...