A few minutes back, as Damien was watching the battle, he felt a sudden aura fluctuation in the distance.
It was subtle, almost imperceptible. It traveled in such a strange pattern that nobody else could notice it, but that pattern led straight to Damien.
This was obviously a summon.
No, rather, he was being alerted of that person's presence.
Damien was a naturally curious person, and on top of that, he didn't necessarily be present at the battlefield. His people were more than capable of taking care of this situation themselves. The corruption was guaranteed to not spread too far.
With nothing holding him back, Damien took the opportunity to investigate the incoming aura.
His search led him tens of millions of kilometers to the west. Not just that, he found himself descending into the earth through a ravine and finding a cave hidden deep within it before he started to feel the aura strongly enough to indicate its closeness.