Rean and Sister Orb were running into a persistent problem while attempting to separate the Godly Energy from the guardian's core. Every time they tried, the energy reacted violently, resisting extraction as if it possessed some form of instinct or will of its own. That alone made little sense, since what they were dealing with was supposed to be nothing more than raw energy without consciousness.
After briefly stepping out of the airplane to inspect the surrounding runes on the tunnel walls, the reason finally became clear to both of them. It wasn't the guardian's core that was resisting Rean's arrays at all. Instead, the interference was coming from the ruins themselves, as if the entire structure was actively maintaining control over what they were trying to extract.
