Beast—the Beasts of Original Sin, the so-called [Evils of Humanity].
They were great calamities rejected by human history, a collective term for the seven disasters that endangered humanity.
Though the exact number of Beasts was uncertain, the "numbers" they occupied totaled seven.
Annos were special beings. They had been plucked from the Threads of the Root that had never returned to the Root; their very existence was an outward-reaching end point of observation. Thus, every anno who became a Servant retained the ability to sense the existence of Beasts.
Timelines, worldlines—every branch gave rise to new possibilities. Thus, annos had once observed the existence of many Beasts.
Though individual Beasts differed from one another, these great calamities still possessed several common traits that could be used to identify them.
They possessed a Principle, loved humanity, harmed humanity, and... all had a unique skill.
Namely, [Nega OO].
What Tiamat possessed was an ability known as [Nega Genesis].
There was no doubt that Tiamat was false. She was a false goddess of creation, instinctively driven by an intense desire to return to the beginning, to the most fundamental place, and make everything start over. Yet her existence was no longer permitted by the world; everything she had created now rejected her.
Change—within Tiamat's mind, devoid of reason, the true meaning of [Nega Genesis] was to eradicate everything she deemed not meant to exist, or anything possessing the trait of being "in the way."
It would form an enormous barrier, expanding step by step according to Tiamat's thoughts and gradually devouring everything, until its range covered the entire Earth—the entire "ecosystem."
Servants from the "incorrect human history" in Tiamat's perception—that was, Servants from actual history—would all be "rejected." Some non-Servant existences, such as lives that clearly should not be here, like Merlin, would