Limitless Library

Refers to the metaphysical "library" that is Ouroboros's well of endless knowledge. The Limitless Library is only entered when a universe ends (i.e. heat death) and functions as an interim "afterlife" for all beings accepted into it upon permanent, non-Quietus death. Occupants and their energy are recycled and remanifest in new universes thereafter.

Exceptionally, beings like Firstborns remain in the Library as "librarians" of sorts for Ouroboros.