"Actually, both the world we're in now and the books I've seen are vessels of knowledge. They simply appear before us in different forms."
"After that creature died, its knowledge constantly dispersed, transforming into the books within the Pipe Fortress, manifesting in a form that humans could comprehend."
"As for that vine... it doesn't belong here. Perhaps, like me, it came in from the outside. There are no books about it in the library, nor have I found any similar records..."
Shortly after arriving at the library, the Black Shadow discovered it could "descend" into various worlds by reading the books, which added a bit of excitement to its otherwise tedious existence.
Some of the worlds recorded in these books were interconnected; others were completely unrelated.
Over time, it gradually came to understand the relationship between these worlds and the books:
