User:Omega natsu2/Sandbox 2

The Great Gastrea War is an event that took place ten years prior to the current storyline.

Prologue
A mysterious virus that suddenly appeared before mankind in the year 2021; entering the human body through bodily fluids and causing infections, altering the host's and their form, triggered the beginning of the end. Due to its high contagiousness, it immediately spread throughout the entire globe, easily taking humanity's spot at the top of the food chain.