Villain: Ultimate Mutation System in the Alternate World

"Hyper Rail Gun," he muttered, summoning his iconic skill. The weapon materialized from his hands, sleek and powerful, glowing with an intense dark red lightning energy.

He pointed it at the girl, locking and loading it, his finger hovering over the trigger.

A smaller projectile was chosen on purpose this time. The idea was that it would cause enough damage to be deadly but wouldn't create a big explosion. This approach ensured that things wouldn't spiral out of control.

The girl gazed up at him with confusion in her eyes. "What are you doing?" she whispered faintly.

Reign chuckled. "I'm planning to kill you because you're a bad girl,"

"I see," she replied with a melancholic tone. "Before you kill me, I want you to know that I did not mean to hurt you," she added.

"I don't really care, as long as you're dead,"he responded, the electric arc in the Hyper Rail Gun charging with a high-pitched sound.

"Before I die, can you at least give me a name? They just call me M-015," she said, her voice filled with sadness.

"Are you sure? I'm really bad at naming," he asked.

She nodded, her eyes bright with excitement . "Yes, I'm sure. "

"A name, huh?" Reign mused, looking at her. He was going to kill her anyway, so he decided to grant her last dying wish.

As he accessed his memory, he recalled a particular name from his past life. He remembered watching reruns of a show where the character had left a strong impression on him.

"Alright. How about... Elsa?"

"Elsa?" she repeated, her lips forming a smile. "I love it."

Her smile widened, and she opened and raised her arms to accept her death.

This made him feel that she was more of a nut-case than Anna. First, she asked him for a name, and now she was just accepting her fate. But that wasn't important .

What mattered to him was her power, and he wanted it for himself. If he could absorb her abilities, freezing the entire city would be possible.

"I hope you can kill me," she spoke up. "Many have tried, but everyone failed."

There was no arrogance in her voice; she was just stating the truth.

Looking at her, he felt that she genuinely wanted to die, which might explain why she wasn't resisting. Regardless, he kept his guard up. He didn't want to get too complacent and end up dead.

For all he knew, this girl might be a cunning monster just waiting for the right moment to strike.

"It just means you haven't met someone strong enough!" Reign chuckled before pulling the trigger.

ZZZZZZ!

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The hyper projectile pierced through the air and, because of the short distance, it landed almost instantly. However, despite the increased power, it froze and shattered into pieces before it could even touch her.

Reign scowled, frustration clear on his face, but he didn't pause. Determined to overcome her defense, he immediately started shooting again.

ZZZZZZ!

ZZZZZZ!

ZZZZZZ!

Each time, he increased the power by 10%, layering his attacks with different types of energy.

First, he unleashed a burst of Fire and lightning Energy, scorching everything in its path. Next, he added Negative Energy, which twisted the very air around his shots, making them more destructive.

Wind Energy hummed through the mix, adding more power to his projectiles, causing intense wind and jolts with each shot.

Finally, he infused Death Energy , giving his attacks a dark, annihilating force that was supposed to drain life itself from anything it touched.

With each increase in power, his attacks became more devastating.

At 70% of his maximum charge, the combined forces of Fire, Negative, Lightning, Wind, and Death Energy created an overwhelming attack.

The air itself seemed to tremble under the strain, and the intensity of the attacks reached a level that was almost beyond comprehension.

But no matter how strong the attacks were, they instantly vanished along with their shockwaves. If not for her weird ability, the entire place would have already been blown apart from the amount of power he was releasing.

'Should I increase the area of effect?' he muttered, considering making his bullet larger.

However, after contemplating it, he realized it wouldn't matter much. The penetrating power of a smaller projectile was higher.

'Her power is really something else' he thought to himself.

He wasn't worried about not being able to kill her; he had plenty of trump cards left. Instead, he was intrigued by her ability.

From that exchange, he could tell her power wasn't just ice; it was something entirely different, something far more powerful and terrifying.

'What the hell did the humans create?' he sighed, torn between being amazed and cursing the ingenuity of human beings.

'I should use this opportunity to test my power,' he thought.

He wanted to see how well she could defend against his normal attacks. So, he materialized two more railguns, intending to see if she could freeze it when he used them in rapid fire mode.

Reign aimed the three railguns at Elsa and unleashed a barrage of rapid-fire projectiles.

ZZZ— ZZZ—ZZZ!

ZZZ— ZZZ—ZZZ!

ZZZ— ZZZ—ZZZ!

The air crackled and thundered as the bullets streaked towards her. Each projectile was smaller but packed with immense power, designed to penetrate even the toughest defenses.

As expected, Elsa's freezing ability activated, but Reign was hoping that one of his attacks would actually hit.

However—

Everything froze and shattered before they could reach her, no matter how fast or numerous they were. Her defense remained constantly strong, and the projectiles froze and get destroyed instantly upon impact.

Her freezing ability held strong, showing no signs of being overwhelmed. He realized he needed a new strategy, as sheer quantity alone wasn't enough.

"Alright, let's see if you can handle this," he muttered aloud. He combined the three railguns into a triple-barrel railgun, a new variation of his skill that he named Triple Slug.

This technique was inspired by the concept of a double-barrel shotgun but with three barrels, designed to deliver a powerful and concentrated one shot attack.

The sound of the spinning projectile hummed inside the weapon like a powerful jet engine, and red electric shocks danced around them, melting the ice on the walls.

"Goodbye," Reign said with a smirk.

ZZZZZZZZZZ!

He fired the Triple Slug, and the three projectiles burst out with power now about 150% stronger than before.

Reign expected the impact to be enough to make her head explode, but unfortunately, it did not make any difference.

"I…" Reign was stunned.

That attack could have killed a Peak Demon Lord, but she just stood there, unaffected.

The worst part was that she wasn't even trying to resist; she was simply existing.

"When do you plan to kill me?" she asked, her voice tinged with worry, she feared that Reign might not be powerful enough to end her life.

'Damn it,' he cursed inwardly, feeling insulted by her honest words.