I Spread my Genes to Level Up in the Apocalypse

"Doesn't her awakening rank increase, or is the mutation energy not enough to evolve?" Ray's eyes narrowed.

"Kill some more, then."

He stood there silently, looking at Grace dropping ice balls as if she was dropping nuclear bombs.

And the effect was nothing short of a small nuclear bomb as well.

Just as the last undead in the range was frozen and broken to bits, Grace's breathing became ragged, her chest heaved up and down.

Her legs became weak, almost falling to the ground.

Ray caught her by the waist. "Are you okay?" His eyes were filled with a concerned light.

"I am fine, thank you," Grace blushed naturally.

Ray's sudden shift from treating her coldly to being gentle made her feel something in her heart, causing it to beat loudly.

Ray could even hear the heartbeat from where he stood.

"What happened?" At this time, Ray really wished there was something that could help him see her status or something, or he would be completely clueless most of the time.

"I see some images in my memory that seemed to enhance the spell I cast, and the mutation energy inside me increased… no, the spell I use takes less mutation energy now?"

"How do you know?" Ray frowned.

"I seemed to know by instinct," Grace said, touching her head. "If I could only use the ice ball three times before completely running out of mutation energy, now I can do it 20 times with the same amount, although the mutation energy in my body has mostly vanished. The power of it seemed to have increased."

"I see, you have never felt this before, right?" Ray looked at her.

Grace obediently shook her head.

He became extremely thoughtful again, his eyes drawn to the crowd of undead still alive. Despite Grace's three attacks, there were still a lot of undead left.

These undead were still numerous in number as far as the eyes could see.

Ray gritted his teeth as he put down the two cylinders which were on his shoulders.

"Status."

—

[Mutation energy: 84]

—

The familiar red panel appeared in front of him, but Ray's eyes were only on one particular section.

He glanced at it and carried one cylinder with his two hands, taking a deep breath to create momentum and carrying the cylinder at the back of his head.

Whoosh!

His muscles focused as he snapped open his eyes.

At this moment, all his muscles were stretched to the limits, and all his strength applied to his hand as he threw the cylinder to the ground.

As the cylinder was going to reach the ground, Ray watched it in anticipation.

Boom!

Instantly, the moment it touched the ground, it exploded, killing all the surrounding undead in almost a second, engulfing the entire place in a fiery hell.

Even outside the range, other undead were caught by the fire as well.

For a moment, the entire place was in chaos, and almost all the undead in the area were cleared.

However, the next moment, other undead started to come again with the loud explosion from the cylinder.

It was like an open invitation for the undead to return.

The next moment, Ray's eyes were filled with a sea of undead, just like it had returned to its previous state.

This time, he even saw several undead who had denser patterns in their body with "1" imprinted on their forehead.

Ray was left speechless.

He had killed at least a hundred undead with just that cylinder, but they seemed to be endless.

"Status," he muttered in his mind.

—-

[Mutation energy: 98]

—-

"Hmm?" Ray frowned. He had killed at least more than a hundred, but all he got was 14 mutations every.

"Was it because I indirectly killed them?"

He felt like his conjecture was correct, so he dropped another cylinder with full force. This time, he carefully counted every undead killed.

An explosion rang in the air as the scene was engulfed in a fiery hell again, burning countless undead to charcoal once more.

"One hundred and twenty?"

Then he glanced at the system again.

—-

[Mutation energy: 110]

—-

"So it only increased by 0.1 per undead?" Just as Ray was contemplating, his heart almost skipped a beat.

An undead that seemed to be a dog, with its forehead imprinted with "1," was climbing up the wall using its sharp steel claws that dug deep into the wall.

Humans weren't the only one infected by the mutation, even animals and the others were affected as well, however they were extremely rare because their chance to become undead after being infected was low.

They would instantly die instead of being infected most of the time.

"Hurry up and release a spell," Ray urged Grace, who seemed to have blanked out.

"Oh, okay," Grace said vacantly when she saw the level one undead dog, which made her extremely anxious, chilled to the bones.

Grace hurriedly imagined an ice spike and dropped it on top of the undead dog's head, but to the anxious gazes of the two, the undead dog only fell to the floor before getting back up and climbing the wall.

The ice couldn't accumulate on its fur and was broken by just a shake of its body.

The other undead level 0 dog also started to climb with the level one as well, Ray termed them as such.

"Wait here for a moment." Ray turned around and left, leaving Grace stunned.

"Are you a man, bastard? How dare you leave me behind," she started to curse venomously. "You should cut your rod and act like a girl instead, you spineless man…"

Ray was annoyed and stunned at the same time, hearing the cursing.

"Hey, I am going to take some weapons out from inside," he turned back, giving a look which didn't seem like a look to Grace, before leaving the place.

"Oh…" Grace hurriedly closed her mouth, falling into complete silence.

"I might be suffering a little at night," she muttered bitterly, looking at the dog and sending another ice spike at it.

As expected, although the level one undead dog was knocked back, it started to climb the wall again. Even worse, the level 0 undead dogs were already very close to them.

"Shit, where are you, Ray? I am going to die if you don't get out here!" she shouted at the top of her lungs.

Finally, Ray appeared holding two pans in his hand.

"Are you going to kill this undead with just pans?"

"Don't underestimate my power, my lady," Ray chuckled as the level 0 undead dogs were about to get very close to them.

He raised his right hand and slapped hard.

Ting!