The Stories of Reliul

This book is a collection of short stories (though some may not be quite as short as others). They are told from the perspective of a unique narrator: an immaterial observer named Reliul cursed to wander the multiverse for the rest of time and not be able to interact with anything. That seemed to be the case, though, until Reliul stumbled upon this universe's version of Earth and discovered it could communicate with a specific human. Using this person as a conduit of sorts, it tells the many stories it's gathered over the trillions of years it's spent adrift.