In North America, you call this a coroner?

Description

[Gunfight + Case-solving reasoning + Decisive killing]
The red moon is in the sky.
Brian discovered that he, like some rare extreme perverts, had a magical ability: to fulfill the remains of the corpse's obsession and obtain the corpse's gift.
While he was happy, he was also a little puzzled.
I have good conduct and is kind to others, so why did I receive the gift of Red Moon?
This is the greatest insult to his noble personality! ! !
...
The core of this book is interesting cases and methods of death. Through the perspective of the coroner, it tells everyone about the love, hate, anger, and resentment that happened in parallel worlds.