Villain: Ultimate Mutation System in the Alternate World

A notification sounded in Reign's ears as he devoured the final corpse at the last military base he visited. He had already swept through all the other bases, marking the end of his hunt.

The virus had taken over, so he didn't have to do much.

When he reached the base, he didn't have to worry about much resistance because everyone was busy coughing blood and bedridden, unable to muster a fight.

There were some hunters who could still move due to their high immune system, but against a demon lord , they easily died without putting up much of a fight.

'I'm level 55 now,' he thought to himself. 'I could still fly around and search small towns for humans, but their numbers won't be much,' he pondered.

He was already in the big leagues, so adding a few hundred humans wouldn't matter much.

Besides, this place was quite large, and even if he could fly, it would take time.

There was also the risk of other factions coming to investigate, so the longer he stayed, the more dangerous it would become.

'Alright, time to get out of this place,'he decided, walking towards the exit of the hangar.

Abandoned helicopters filled the airstrips, their metal frames glinting in the sunlight.

Countless pieces of camouflage and military clothing were spread across the area, gently moving in the breeze.

Equipments were also scattered on the ground, all appeared new and well-maintained. It was evident that just a few days ago, the people here had been diligently cleaning their guns.

And now, because of one single individual, they had all died just like that.

It wasn't the kind of death that offered a quick end either; rather, it was slow and agonizing, with them struggling to survive the deterioration of their lungs before ultimately dying.

'I bet they could reuse all this equipment and uniforms with some washing,' Reign thought to himself.

He observed that while this type of killing was clean, it left plenty of salvageable items.

He briefly entertained the idea of destroying the base but concluded that none of the military equipment posed a threat to him, so why bother?

"Master," echoed a woman's voice—it was Aiku.

However, her appearance was different now; she had orange hair tied in a ponytail, brown eyes, and wore a kimono-like garment with a short skirt for ease of movement. A katana hung from her waist, and she looked more composed .

She had already vacated Demi's body and now had taken possession of a Hunter as per Reign's order.

He walked closer to Aiku and inspected her new body.

Reign had chosen it for a reason, believing that Aiku's ability to possess bodies would become useful in the future.

He also appreciated her submissive nature, which suited him well as he was accustomed to giving orders without unnecessary questions.

All in all, he felt that Aiku was a good asset, and it would be a waste of her talent and ability if he did not maximize her usefulness.

"How's the new body?" He asked.

Aiku flinched a little, a muscle reaction triggered by the tension she felt when her Master scrutinized her from head to toe.

Being observed by a literal Demon Lord who looked like the incarnation of evil itself was not a good experience at all.

Aiku quickly answered, her pace fast so as not to waste her master's time.

"It's perfect. The breathing technique of this body is not harmful to me. Thank you, Master, for giving me this body. I will use this body to serve you..." She paused, realizing she had made a blunder.

As a ghost, she was still a woman and knew her words might be interpreted with a double meaning.

"Good," Reign nodded casually.

There was not even a hint of surprise in his voice, as he had never considered that "serving with her body" could imply sexual pleasure.

Right now, the only pleasure he felt came from devouring humans, becoming stronger, and essentially tormenting and humiliating anyone who dared to underestimate or challenge him.

There was a time when he felt some form of attraction in Summit City after meeting Cyril, but after not seeing her for a while, he completely forgot those weird feeling he felt whenever she was around.

In the end, he was never given the chance to developed or nurtured those feelings to the point where he realized he actually liked her.

"I want you to keep pretending to be a hunter. We'll meet in Green Valley City . So, make sure to integrate yourself well, build connections, and gather information for me. And try not to change bodies unless necessary so I can identify you more easily,"

He instructed, because he needed to give her some orders before he left the area and going off the radar for a few days or weeks.

"Yes, Master," Aiku nodded, she planned to carry out his orders no matter what.

Knowing Reign had completely destroyed a city, killed powerful hunters, and even an angel close to reaching Demon King Level reinforced her commitment to him; there was no way she would betray someone as powerful and psychotic as her master.

She understood that her master was determined to eliminate humans, leaving her no option but to stay loyal, as fleeing would only delay the inevitable.

Hiding from city to city would be useless if her master ended up destroying everything.

So instead of fleeing from a moving calamity, it was better to hide behind it.

They continued talking, with Reign giving her instructions so detailed that Aiku felt inadequate in terms of IQ and braincells in comparison.

His precision and insight made her aware of her own shortcomings.

He not only advised her on how to stay hidden and safe but also offered suggestions on how to enhance her abilities.

Just by listening to him, she had gained a lot of useful ideas and information that would allow her to utilize her new body more effectively.

"Did you get all of that?" Reign asked.

"Yes, Master, thank you for enlightening me," she bowed her head, impressed by her master's resourcefulness and intelligence.

"Don't disappoint me," Reign warned one last time.

With that, he flapped his demon wings and flew upwards.

This base was near the edge of the barrier, so it didn't take him long to break through it.

What greeted him was immediate darkness, a huge contrast to the warm atmosphere inside the barrier.

With how thick the miasma was, it would be impossible for any kind of airplane to stay in the air because the propellers would get wrecked.

"Tsk" Reign clicked his tongue, forced to fly lower.

He could have covered himself with Negative Energy to fight off the miasma, but he felt it was too much of a hassle.

Plus, he also preferred flying lower; this way, he could even pinpoint if there was a horde of corrupteds worth killing.

Others might fear them, but they were just a commodity for him.

Right now, he wanted nothing more than to encounter a horde with over a million corrupteds to make his life much easier.

'Time to search for a huge nest!,'