If asked what had changed him the most, Nan Tian had only one answer.
—[Ghost Messenger].
If it had not been for that book, he might have died on that Bus three days ago. By that logic, what kind of existence was the Master who sold such strange books?
It was precisely because of this that Nan Tian had always been deeply curious about Mister Bai.
After discovering that the city was gradually descending into madness, he had tried to find the other man. Yet over the course of three days, he had come by seven times in total, and the shop had been closed every time.
He had assumed this time would be the same, but unexpectedly, the shop was open.
Just as before, this newly opened bookstore still had few customers. When he entered, he found the owner sitting behind the counter, flipping through a book, while the two lolies from before were nowhere to be seen.
"Hmm, Doctor?"
Noticing his arrival, Mister Bai placed the book face-down on the table and greeted him with a smile.
"What, planning to buy a few more books?"
"Something like that... Oh, right, this is the book I bought from you before."
After hesitating for a moment, Nan Tian took [Ghost Messenger] from his clothes.
...He intended to lay everything out in the open.
"What? Let me make this clear first: once goods are sold, they can't be returned or exchanged, even if there's a quality issue."
The moment he took out the book, Mister Bai's expression immediately turned wary.
"...I followed the method recorded in this book and successfully became a [Ghost Messenger]."
After a brief silence, Nan Tian held out his hand.
"After becoming a [Ghost Messenger], I gained the ability to command... uh..."
Before he could finish, Nan