This is a sequel to Underworld.
It tells the story of the ongoing battle between the Underworld and the Human World.
The human world has been ruled through human sacrifices,
while the Underworld depicts its everyday life as it fights against the leaders of such nations.
The Underworld earns money through marketplaces,
and gathers funds to live together with yōkai (monsters) and ghost writers.
After a period of volunteering to exorcise evil spirits in the human world,
the story continues into the latter half, where divine punishment begins to descend upon humans who kill gods.
This side story touches on those events.
It is a world where the Underworld, Shinigami (Reapers), Humans, Ghosts, and Yōkai all stir and move.
The nation in this story has been shrouded in evil spirits born from people’s negative emotions,
and special agents belonging to the Underworld continue to work for them even after death.
Since this story takes place a little beyond the events of the main story,
I hope you enjoy it as both a side story and sequel.
Originally, it was included in the main story,
but I decided to separate it as a side story and sequel to make it easier to read.
