-"When a world becomes proud of being unstoppable. When a civilization believes it has absolute power. When a species is cataloged as invincible, they tend to neglect factors, and turn a blind eye to the most ancient entity, more ancient than the most intelligent species, more ancient than life itself, more ancient than the very formation of the earth, and with the highest death count in the history of humanity: Measles, Influenza, Smallpox, Bubonic Plague.-
-This entity already resonates in people's minds, this entity is already engraved in everyone's heads, this entity is already a source of people's fear. The name given to this entity is [Virus]-
A bright speck appears in the void, next to the tiny dust, some hands emerge from the same void, and hold the speck.
-You who decided to open your being to house chaos in your existence and whispered to the abyss.-
-You who chose to shed your very name, your very soul and embrace the end of your existence.-
The entity closes its hands and its eyes appear in the void, dazzling, and they look at the reader.
-You, spectator, who read these words, and have inhaled my presence, will observe my creation of chaos, unleash desperation and death in this world.-
The entity opens its hands and drops the speck into the void, and the creation simply falls indefinitely into the darkness itself.
-¿---------?!-
A voice is heard from the speck itself.
-Where am I?-
The creation came to and its consciousness awakened, but it's confused about its situation, having realized it was in the darkness.
-Why can't I...?
Upon trying to move, it realized it felt nothing in its body. It couldn't see its limbs, nor any part of itself. Only its very existence seemed to float in nothingness.
-That person, who were they?.-
While the speck pondered its thoughts, a resplendent light rises in the depths of the void, shining like a sun. It was the only part that changed in the endless void. There was something that attracted that light.
Upon concentrating on the light, the consciousness was absorbed by the light without resistance. The light enveloped its entire panorama.
-(Hm?!)-
At that moment, a vague sensation became a certain perception: a pulsating heartbeat, the ability to breathe.
-(What? Can I? Breathe?)-
It opened its eyes softly, before its eyes extended dense trees and the smell of humid earth invaded its senses, it was in a forest, the light barely filtering through the cracks in the foliage.
-(Where is this place?)-
Confused by the sudden change of environment. Everything seemed too strange: its perspective was just above the ground, it couldn't stand up, even though it tried, nor on all fours should its vision be so low.
Looking around, it finds a nearby puddle of water, approaches on all fours to observe its reflection.
Looking at the reflection in more detail, it showed: A furry face, rounded ears, black and shiny eyes, a small nose pointing upward and protruding front teeth.... what it saw reflected in the water was, nothing more nor less, a mouse.
-Chuchu!? (What the hell?!)-
Upon touching the small gray body, it was startled. A high-pitched voice was heard. Observing more carefully, it confirmed the impossible: it was a rat.
-(Why do I look like this?)-
While immersed in bewilderment, a deafening buzz, and a voice resonates in the mind.
New base abilities have been acquired:
[Domination I][Replication I][Infectivity I][Devour I]
Faced with the incessant voice invading its mind, with tenacity it tries to reason with the voice.
-Chuchu?!(What? Who are you? What do you mean by new abilities? Replication? Tell me wha-)-
Interrupted by the voice again, it only resigns itself to listen.
New abilities from the new host have been acquired:
[Cowardice I][Danger Detection I][Smell I]
New symptoms from the new host have been acquired:
[Fever I]
New types of infection from the new host have been acquired:
[Saliva Transmission I][Waste Transmission I][Airborne Transmission 0]
The avalanche of information collapsed its processing capacity. It was only momentary but it recovered from the amount of things that piled up in its mind.
But several questions arose in its head. It had to understand. One of the questions that rose most in its mind is...
-Chu...(What happened to my other body?)-
It whimpered while thinking with its new body. Had it died in an accident?, and upon waking, it was a mouse in an unknown forest. If it discarded the idea of dreaming, then only one hypothesis remained.
-(Did I die... and reincarnate?)-
An absurd theory, but strangely logical. The concept of reincarnation appeared in the fantasy stories it knew. Now that it had a mouse's body, it couldn't dismiss it without thought.
It was then when it remembered that person. The words they told it:
-"You who died and cried to the abyss itself. You who lived a dream life and offered your riches to nothingness. You who called my name to the void and decided to make a deal to save the one you treasure..."-
It ponders about that deal that person proposed. It didn't understand what they meant and what benefited them. It was then that a person came to mind.
-(Of course... it's true, I couldn't save them but if what they told me is true...)-
Among flashbacks occurring in its mind, the deal that person mentioned resonated intensely in its head:
-"...You who will become a calamity and offer me half the life of the world. You who will serve me and I will give you what you treasure most..."-
Despite the deal being so macabre, it would turn anyone into a genocidal maniac, other people would reject it. But instead, reason was no longer necessary. Pieces of memory filter into its mind, a promise it had told that person; "I will save you," and they were triggers to abandon all humanity and become a monster.
The mental announcement mentioned abilities, symptoms and infectious capabilities. In other words, its new form wasn't a rodent but that of a virus that had parasitized the consciousness of a rat. Although it doubted its mental health, assuming a parasitic ability explained its situation. And upon reaching that conclusion, only one thing was engraved in its mind.
-(Yes... I must fulfill it. If it's for them, there's no problem in ending half of life.)
With the deal in mind, determined to fulfill it and save that person it remembered. This second life was its own. It would start from the bottom, and destroy every living being.