After a long day out on “field duty,” Leon and Rosvisser made their way back toward the Lionheart Society’s clock tower in the slum district, carrying their bags filled with recording stones.

In the slum district, people tended to turn in early. It was only eight in the evening, and while the middle district still glowed with lively lights, the streets here were already deserted, save for the occasional stray cat darting across.

Walking leisurely down the empty streets, Leon and Rosvisser strolled right in the center of the road without a care—no need to worry about oncoming carriages, as …