The 'Planetary Shield Generator' was recently exchanged from The Empire to the City of Knowledge. It's the most powerful shield generator on Terra, and Kerraith connected it with the power of the Silver Sky Gateway, creating a 'cage' that is indistinguishable from the inside out.
This cage almost isolates space-time, turning the surroundings of the Heavenly Metropolis into a complete Otherworld.
Before the two Fifth Energy Level experts from the City of Knowledge can decide a victor, no one can leave the Heavenly Metropolis — but that's not the most terrifying thing. The most terrifying thing is that a number of demons, exceeding everyone's imagination, are rushing towards the Silver Sky Gateway.
Although their target is the Silver Sky Gateway, when encountering Humans, they don't mind killing them along the way.
