Villain: Ultimate Mutation System in the Alternate World

To his luck, the person who called out was exactly who Reign was looking for, a middle age man pushing a cart filled with cleaning supplies.

The janitor raised an eyebrow, looking skeptical.

"Why are you looking for me?" he asked, his voice gruff but not unfriendly.

Reign smiled, trying to appear as genuine as possible. "I spilled some coffee in one of the rooms. Didn't want to leave a mess for someone else to clean up. Thought I'd take care of it myself."

The janitor looked him up and down, considering his words.

"Most people wouldn't bother," he said, a hint of suspicion still in his eyes.

"Well, I guess I'm not most people," Reign replied with a chuckle. "I just need some cleaning materials. Won't take long, I promise."

The janitor hesitated, then nodded. "Alright, come on then. I'll let you in to grab what you need. But make it quick."

"Thank you," Reign said, following the janitor as he pushed the cart towards a nearby supply room.

Inside, the janitor handed him a mop and a bucket. "Here you go. Just return them when you're done."

"Will do," Reign assured him, taking the supplies.

As the janitor turned to leave, Reign acted quickly.

He snapped the mop handle using his finger, creating a sharp, jagged edge. Then he brutally drove the broken end into the janitor's throat.

"BUAAHHH"

The poor man's eyes widened in shock, but before he could figure out what was happening, his life ended just like that, and the corpse was quickly absorbed by Reign.

The only proof of the man's existence was his clothing, now scattered on the ground.

"Don't worry, you were going to die anyway. I just killed you in advance," Reign muttered, his voice cold and detached.

He then picked the janitor's uniform and tried to put it on.

The outfit consisted of a plain, dark blue shirt and matching pants, made from strong, stain-resistant fabric.

A small name tag on the chest pocket read "Ryan," and there were several pockets for holding tools.

Pants were a bit loose for easy movement and had a belt with a set of keys attached.

He quickly put on the uniform, adjusting it so it fit him well, and tucked the shirt into the pants.

Next, he pulled the cap down low to cover his face.

Now that he looked like a janitor, he was ready to move through the building without drawing any attention.

He pushed the cleaning cart down the hallway, making sure to move as if he was just doing his job. The cart had mops, buckets, and cleaning sprays.

Walking straight to the elevator, he pressed the button and waited as the doors slid open with a soft chime.

He carefully maneuvered the cart inside making sure it was positioned correctly.

The doors closed, and with a slight jolt, the elevator began its ascent.

As he waited, he couldn't help but laugh quietly. 'So this is the power of the janitor,' he thought.

The disguise was working perfectly. People usually ignored janitors and treated them as if they were just part of the building. Some even completely overlooked him.

Feeling pleased with the disguise, he got ready for the next part of his plan.

The elevator stopped at the fifth floor, and he stepped out to find rows of rooms, much like in a hotel. Each room had a number on it.

As Reign scanned the area, he noticed that the card he had received from Emy also had a number.

With a smirk, he began checking the room numbers, moving down the hallway casually.

From time to time, he encountered important-looking people, but they either ignored him or placed their trash on his cart.

Until—

"Are you new here?" a woman with curly hair and chocolate-colored skin asked as she placed an empty coffee cup on the cart.

Reign gave a friendly nod.

"Yes Ma'am, I just started today. Just getting the hang of things," he replied, making sure to keep his tone casual. "Is there anything else you need cleaned up?"

The woman nodded with a friendly smile on her face.

"Not at the moment, but thanks for asking. If anything comes up, I'll let you know." She glanced at Reign's cart and then at him. "Good luck getting settled in. It's always a bit of a maze on the first day."

"Thanks! I'll be sure to keep an eye out. "

He gave a small nod as she walked away, then turned his attention back to the hallway.

After a few minutes, he found the room that matched.

He paused, listening carefully for any sounds from inside before carefully pulling out his keycard.

A quick swipe of the key unlocked the door with a soft click.

Reign pushed it open and wheeled the cart inside.

The room was empty, resembling a typical office space with a desk, a few chairs, and a locked cabinet.

'I need to be fast,' he muttered to himself.

He moved quickly, scanning the room for anything that might contain the serum.

His eyes darted around, searching for clues or hidden compartments. He checked the desk, drawers, and even the small cabinet, but found nothing of immediate interest.

"Where the heck is it?" Reign said aloud, his voice showing frustration.

He looked around the room again, feeling annoyed that he might have overlooked something.

Finding the serum was the reason for all the effort and detours he had taken. Each moment he wasted only made him more impatient.

'What's that? '

A hidden locked drawer in a filing cabinet caught his attention.

He moved quickly to the drawer and soon managed to unlock it.

Inside, he found some folders and a small metal box made from a rare material. It was lightweight, but when he tried to scratch it, it wouldn't mark.

'It's the same material used in the train tracks,' he muttered to himself.

It wasn't indestructible, but it was much more durable than normal steel and could withstand the miasma's rusting effect.

Reign hoped it was the one he was looking for as he carefully opened the box.

CLICK!

He found a set of vials, each filled with black liquid.

Examining them closely, he noticed the distinctive labeling, which suggested these were likely the serum he was looking for.

'This should be it,' he chuckled inwardly, feeling a sense of relief.

Finally, the serum that had caused so many headaches was in his hands.

'I hope this is worth it,' he added, hoping the effort had been worth the result.

He also checked the folder and saw it contained files about the serum, so he decided to take it with him as well.

But just as he was about to celebrate the completion of his mission, he felt the floor vibrating.

'Damn it,' he cursed inwardly as he activated his undead eye.

Through its view, he saw dozens of people surrounding the office.

BAM!

The office door burst open, and armed personnel stormed in, their guns pointed at him.

Red dots from their laser sights covered him instantly.

"Mr. Janitor, something came up?," the woman with curly hair said sarcastically while standing behind the armed guards.