Bobidevar, Bobidetra. This world is ruled by twin cities and there are so many stories.
The main plot is the story of Scott, a young man who is hunted by the royal city and seeks survival in the north when the virus spreads in the apocalypse.
There are many side plots, some supplementing the main plot and some other major story lines. (The main plot starts from Chapter 15 [Sun and Moon], other stories are branch plots and classified with prefixes)
Chapter prefixes related to the main plot: Sun and Moon, Lonely City, Wilderness, Royal City, Nothingness
Note: The opening story is not the first chapter, let alone the main plot! The beginning is a plot supplement for fans (but it is also related to the world view and the main plot)
Concept: Adventure in a magical world