Is bookshops and Bonedust a prequel?

Excuse me, could you please clarify if "Bookshops and Bonedust" is indeed a prequel to another work? I'm curious to know if this story serves as a backdrop or introduction to a larger narrative that has yet to unfold. Are there any hints or references within the text that point towards a sequel or continuation? It would be fascinating to explore the interconnectedness, if any, between "Bookshops and Bonedust" and other potential stories in the same universe.