Villain: Ultimate Mutation System in the Alternate World

Lucifer's eyes glowed as he summoned a new wave of attacks.

This time, however, he changed his tactics.

Instead of summoning massive orbs, he created countless flaming swords, prioritizing quantity and speed over destructive power.

The air was filled with the burning whooshing sounds as the blades headed towards its target.

Reign, anticipating the attack, dodged and weaved, using his speed to easily maneuver in the air.

But Lucifer didn't stop there. He continued to summon more swords, each one smaller and faster than the last.

The swords began to shrink, from broadswords to rapi, and finally to daggers and knives.

Its sheer number soon became overwhelming, making it increasingly difficult for his opponent to dodge.

SWOOOOSH!

SWOOOOSH!

SWOOOOSH!

As the knives shot towards him, they exploded and scattered on impact, releasing a burst of flames and shrapnel that splattered everywhere.

The effect was similar to napalm bombs, where the initial blast not as powerful, but the aftermath was devastating.

Reign's eyes widened as he realized the true danger of the black flames after shock.

'I need to put some effort,'

He used his agility and speed to create a buffer zone, allowing him to hold on for much longer.

But the endless stream of knives forced him to adapt.

"Now it's my turn,"

Lightning and death energy formed countless daggers at his command, and he sent them out at the same time.

The moment the two forces met, the space started to shudder.

A violent surge exploded, sending shockwaves through the sky.

Black fire wrapped around the lightning, trying to smother it, but sparks pushed back.

The death energy also hissed as it met the cursed flame. Every collision sparked a chain reaction, lighting up the battlefield with bursts of black and violet light.

Neither side gave in, and from an outsider's perspective, both seemed almost equal. But it was far from the truth.

Reign could've ended it faster by switching tactics.

However, he wanted to beat Lucifer at his own game—overwhelm him using the same attacks, the same pressure. That kind of win would taste better.

For Reign, victory wasn't in question. What mattered was how he got there.

BOOOOM!

BOOOOM!

BOOOOM!

The clash of black fire and lightning created a maelstrom of destructive energy, threatening consume everything in its path.

However--

The battle was nearing its end. The black flame army were wiped out, and Lucifer's attacks were growing weaker.

Reign could sense it would only be a matter of minutes before the devil was completely exhausted.

And then it finally happened. Lucifer knelt on the ground, too exhausted to lift his arm. His opponent stood, smiling widely, without a hint of sweat.

"You fought well for someone kicked out of the family, but in the end, you couldn't prove yourself... Not to me, or your father," Reign mocked, adding salt to the wound.

Lucifer's lips curled into a half-smile, the kind that promised trouble.

He slowly raised his head, eyes gleaming with a mix of defiance and amusement. "Your arrogance will be your downfall,"

Reign felt a sudden rush of warning. Before he could pinpoint where it was coming from, a huge explosion came from the capital's castle.

BOOOOM!

Dark purple energy shot out, twisting and spreading like ink in water. The sky trembled as the colors spread, turning the whole area into a domain like state.

At the center of it all, a woman in black armor appeared.

The armor exposed her abdomen, long legs, and soft arms.

On her back were twenty demonic wings, their tips glowing like crystals filled with a misty purple aura.

Even from a distance, Reign recognized her.

"Lilith," he muttered slowly.

His aura also erupted, filling the air with an overwhelming bloodlust that made even Lucifer break into a cold sweat.

The devil finally understood that Reign was just playing around with him before.

Lilith, still savoring her newfound power, felt the bloodlust and turned to see Reign.

Instantly, she too recognized him.

"It seems we're really fated to fight each other," she sighed.

Though they were far apart, they could understand each other simply by reading each other's lips.

"Did you really think I'd just let you go after you fucking betrayed me?" Reign wasted no time to confront her.

Lilith didn't answer immediately. Instead, she glanced at her husband.

Seeing his pathetic state only confirmed what she already expected—the gap in power between him and Reign was far too wide.

She wasn't really that shocked by the result.

Lilith knew Reign wasn't a demon, angel, or devil—he was a being of mystery, one that grew stronger simply by feeding.

She already half expected him to reach this level, even without the seed to aid him.

Still, seeing him get this far on his own amazed her, but it also filled her with disappointment.

All that talent, potential, and limitless growth—wasted. He was a being who cared for nothing but destruction.

But she still wanted to try to use reason.

"Let's end this bad blood between us," Lilith suggested.

"Heaven has already fallen, and for my betrayal, I'm willing to compensate you with the seed. I don't need it anymore—you can have it."

Lucifer staggered to his feet, eyes flashing with disbelief. "Love, seriously? You said you'd hand it over after you got the Holy Grail! You promised to give me more power so I can defeat my father!"

She looked at her husband and couldn't help but see him as a lost cause.

Despite all her efforts to help him grow stronger, his progress stayed limited because he relied too much on the treasure, he stolen from his so-called great father.

If he focused on building his own strength, he could have become much more powerful and might not have lost so embarrassingly.

But Lilith knew that his insecurity was deeply engraved in his heart. It was something even she couldn't heal.

She turned her attention to Reign.

Her husband was the total opposite of him, who thought of nothing but battle, improvement, and growing stronger. For him, everything else was secondary.