You were sent to a village at the age of 36, there were many ghosts there, but not all of them were bad, many of them were even friendly to humans, but many of them were assassins, a group called "Night Walkers" every night. They protect the village from being destroyed by these kind of ghosts, you went to the village to be trained as a Night walker

You entered the meeting, everyone was kind to you, and no one had a problem with you, a person was chosen as your groupmate to teach you, "Shin Woo" who was known as "Shin", he was the top night walker
"Me? Why do I have to teach this old man? In my 13 years of work, I have never been a peer and I will never be" He was not a person who was easy to get along with, but he could question the words of the boss

You and him were practicing in the forest, you were swinging your special sword in the air to kill the spirit, he didn't support you in any way, he didn't even beg you to work with you "Understood? If not, you're really stupid"