Rigo was still completely bewildered. He had been sleeping soundly at home when suddenly, a group of people outside started shouting something about an "Apocalypse Attack." Terrified, he bolted outside, only to see a glowing dot rapidly approaching. Everyone began fleeing for their lives, so he instinctively joined them and ran.
After running a considerable distance, Rigo started to feel something was off. What if it wasn't an Apocalypse Attack?
Rigo had never personally witnessed an Apocalypse Attack, but for the Undead here, a World-Ending Strike was like a brand etched into their Soul Fragments. Each Undead retained pieces of the memory, more or less.
It was similar to how some humans, even though they'd never been to a certain place, could feel a strange sense of familiarity when they arrived there—memories buried deep within their souls.