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Everyone else was being impersonated by Thousand Faces.
One person, Thousand Faces!
Goodness! Just thinking about it is kind of terrifying, eh?
Oh, Thousand Faces is one of us? Then it's no problem.
After all, Thousand Faces' espionage abilities were already maxed out. Back in the day, even when he was weaker, he could infiltrate the ranks of the Heretical Cult, and now...
Fang You stroked his chin.
"Can the legendary skill 'Endless Shadow' replace the minions of the Evil God without the higher-ranking minions noticing anything amiss?"
"It's worth a try. After all, the ability to save one's life is too strong. Even the demigod-level Blood Emperor can't do anything to Thousand Faces," Fang You mused.
So,
the obvious target to test this on would be...
Blending in with the Blood Emperor's followers who were blockading the passages around the Falling Star Pit.