The living and the dead belong to different worlds, and yin and yang repel each other.
The Great Way stretches in every direction, but everyone must walk their own path.
On the ninety-seventh day after losing his job, Lu Chen found a new one.
Officially, he was a Boundary Keeper. Among ordinary people, he was called a courier.
Only, what a Boundary Keeper had to deliver was things belonging to the dead...
Other people feared the word “ghost.”
Lu Chen feared getting a bad review from one.
But after a female detective got involved, things gradually became more complicated.
Before long, the two of them had uncovered a thousand-year-old mystery...
