Despite the Invisible Demon's deep-set fear of the Moon Empress, an evil current arose from it.
Normally, people would see dimensional lifeforms as losing their freedom when they became an Apostle's believer.
But to a dimensional lifeform, becoming a believer was a goal that they were willing to work their entire lives for.
To them, it was an unimaginable honor to be able to become an Apostle's Favored Believer.
Both believers and Favored Believers needed to supply faith power to their Apostle.
If the Invisible Demon used its soul as the paper and its faith as the ink to swear its loyalty to Lin Yuan, it could no longer become a believer of an Apostle, much less a Favored Believer.
As such, the Invisible Demon would object to this regardless of how much fear it was in.
The evil current emanating from the Invisible Demon seeped out of the dark purple metal cage and gave Lin Yuan a familiar feeling.