Race conversion?

"Help... Is there no one arriving!!?" Near the cave which was known for being Neon's burial ground a technologically advanced aircraft crash-landed on his doorstep. Even though it didn't suffer a ton of damage, the passengers were met by a horde of monsters of all shapes and sizes. There wasn't much to be said apart from the guardians on board, most of the passengers have perished. Their bodies weren't granted the ability to access the system making them which made them weaker and downright incapable to survive

"Aaaaaaghhhhh!!!" Their bodies were soon brought to a state where they can no longer be identified by their appearance. Even though Neon's cave was a little close to its location, they were too unfortunate to land on the barren wasteland inhabited by the monsters. One by one, their numbers decrease and the ones that were able to last long. Their survival was dictated if they either have the skill to fend off the monsters attack or they were the few who were lucky enough to survive

[System: You've encountered a different species from the other entities that you previously scanned. A race that can become a guardian, a two-legged mammal, that has a different variety of ethnicity. The race called [Humans] has been added to the guardian's race category]

'So my guess was right...? There's no reason for me to shed a tear, even if this situation was an accident. These people would've known better than to fly on top of an isolated area, by the looks of these clothes... It seems that these people are from a wealthy family, they must have bribed the pilot to arrive at their current situation. It's such a shame, but they're all dead, there's no point in pitying these types of people. But I'll use their remains and preserve them, I need some bait for the next territory that im visiting,'

After he brushes off what's left of the hint of empathy from these people, he swiftly killed everything in his path. Large and small monsters rallied from every side as soon as they saw what they comprehend as a human. This resulted in a medium size saber tooth tiger pouncing on his blindside, where it met its end with the tip of his blade. Its body crumbled after it was injected with a lethal amount of poison that quickly deteriorated its body. The other monster was frozen in place as soon they saw the capability of the being they bared their fangs

"I advise you all of you in present to save your breath, attacking me or fleeing is also a viable option. The only question is whether or not you'll find yourselves doing such a thing when you're in my territory!!" His eyes shifted to its golden counterpart, which spreads a pressure that even the monsters bigger than his own would freeze. As much as they see him as a human being, their instincts say otherwise, right then and there what the monsters saw was a monster

[System: The guardian has used the spell [Little helper]. Which spent the required amount of mana to summon a loyal imp for the guardian to command. The guardian had selected the number of imps he wishes to call. The total number has been changed from 1-2, resulting in two commendable summons to appear by his side]

Soon after he summons two imps with the use of his wand, he notices that the shard of catastrophe flickered in response. By the time he returned his gaze to his imps, he was surprised to see a smaller version of the abnormal. What's more, the two imps that turned evolved into an abnormal, the two of them still obeyed his every command

"Kill!!!" With just a raise of his finger and a single word, whilst his eyes were focused on the monsters. His summons attack without any form of hesitation to his command and fire a barrage of spells in front of their prey. It was a little boring on his end, which made it clear that he wanted to join the massacre that his summons had ensued. He calls for the system and opens his inventory to acquire his blade which has yet to shower on their blood

[System: The guardian has called upon the ability that dwells inside the weapon called [Void fang]. The chosen activated ability is [Venoumous application] the blade of the great sword will naturally apply poison. A poison more potent and deadlier than the Void venom has been applied to the greatsword, the skill has been overridden. The secreted poison will be shifted to the one that was applied for the next 10 minutes]

In the area where his imps weren't here to help him or grant him any kind of support, there he fights the monsters. He lunges forth and swings his gigantic sword that easily slashes through the thickest layer of flesh he could've ever struck. There were a few that tried to flee, only for their end to arrive by their skulls being pierced by a few spare bolts. Those who manages to survive its piercing force died in the poison he previously applied, whilst the others banded together

It was impressive to see that they even had the Intelligence to cooperate with a monster different from their own. What intrigued him the most was the fact that they were pushing him back with so little force he was trying to use. However, he wanted to give them an honorable end, to the point that he didn't play the role of their prey and released his strength. When their claws, teeth, fist, stingers, and more were to strike his body, it was stopped by the scales that appeared in his need

"Basic sword arts, Charging slash!!!" He dodges the attack that was going to strike his head, the only place where he didn't apply his scales. In response to their efforts to try their hardest to end his life, he couldn't help but feel sympathetic for toying with their lives

With just one step at his front, he swings his sword and aims it at the ground. More than five seconds passed he created a dozen slashes that targeted the monsters. Their bodies flew in every direction he gazes and his sword was showered with different types of blood. When he was about to call it a day as soon as he collected a few pieces of meat from the corpses of his previous race. He was stopped in his tracks when his heightened sense of hearing picked up a heartbeat not that far away

"There's still a living being in my area? It's heartbeat is not that loud or weak to be described as a monster. Rather it's the same pitch as the human heart," He walks closer to the location of the noise where he founds a boy in his teens. With just a glimpse of its shabby clothes and the scar that enveloped its body, along with the collar on its neck

He was able to conclude that he was gazing at a slave, its body was too weak and it suffered a major injury. Even with his knowledge, he could only do was prolong its suffering, he didn't have the necessary amount of herbs. Nor does he possess any equipment high enough to refine a perfect medicine for this child. All he could do was grab his knife and slith the child's throat until

"... I... Want... To... Live...!" He notices the teen's eyes that were open and was able to see his face even after losing a ton of its blood. However, those words were simply labeled as an extra weight that he didn't wish to carry. His eyes tell him that this child wasn't that strong to survive even after he aids it to learn about the monsters. The only thing that stop him from ending the life of this child was the notification he just so happen to receive

[System: A fleeting life has been detected, and your race's unique ability [Infestation] can be activated. It will invade the body of any compatible life form to convert their race to your very own. This is an essential part of the evolutionary path, before you could evolve you must have more than one in the population of your race. A single variant cannot be called a race it'll be labeled as an abnormality, since it's not seen to have the ability to mass produce]

After he heard of the content within the notification, he had the most menacing stare he ever made from that child. He reaches out his hand like the information he receives from the system and then an unknown fluid appeared from his palms. The next thing he did was transform one of his nails into a sharp and piercing needle and inject the fluid through its body. Moments later when he carried the child back to his cave, he notices a peculiar sight

"Graaaaaaaahhhh!!!" The child was screaming louder and louder by the second, he thought it was just his imagination. But as soon as he racks his brain, he realizes something that he might have overlooked, this child had a different dna. Instead of the homunculus fluid merging without a single problem, he realizes his calculation was incorrect

'Come to think of it, I've never seen anything like this before. It seems that its bodies are slowly being eaten away from the inside out and the already eaten parts... It's a good thing I have the golden eyes of the abyssal tiger, I can see through this child's body like I possess an x-ray vision. To summarize the occurrence, the body parts that were consumed were replaced with a new set of organs. An organ closely related to mine, having both the bone structure of the thornerus hound and other catastrophic materials. I wonder what will I gain once it's finally confirmed when this child's race has been converted to my own,'