They just changed from "invading the campus" to "invading the Art Building"!
The essence is still an invasion!
An invader is an invader, and changing the place of invasion does not strip away the definition of the invader. Even as time passes, the fact of invasion cannot be altered, and many of the sculptures in the campus stand as bloody evidence of the nocturnal species' invasion.
In the inverted sky of the Art Building's shadow, the nocturnal species mixed with the storm and rain are but the least conspicuous existence.
The rainwater in the abnormal weather is the real source of contamination!
It seems to be waters from a black ocean, with turbulent waves that somehow invaded the layers, crushed by the layers between them, and what's left was diluted in the real world, finally becoming rain.
