Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 16 - 16-80. God Keys

A ritual gone wrong gave him the world's deadliest Class—now all he wants is blood.Zeth stole the most powerful ritual magic in the world from a mad cultist. A Class that's fueled by the blood of his enemies and human sacrifice. One that's illegal to use, punishable by gruesome death. And now that he has it, he's faced with a choice: hide away for the rest of his life from those who would hunt him down, or embrace the power, becoming the hunter to get revenge on the murderer that stole his friends' lives.For Zeth, that's no choice at all.His enemies have to die. And he plans to use every drop of blood, eldritch ritual, and demonic summoning he can to kill them.

The author named me Wei Changcheng, also known as Wei Great Wall.
I really defended the Great Wall. I managed to climb the Great Wall extravagantly, but I was squeezed down from the Great Wall. Even if I crossed it, what kind of trouble did I have to attach a system?
It’s fine to have a system as a bonus, but what kind of trouble is it going to be annoying wherever it goes?
“In Harmony…”
What? You still have to “eat” the system? Have a lot to eat? I’ll just call you an idiot from now on!
What? You want to be my partner? “In Harmony…”! Why are you pressing me? Hehehehe, my original form can climb trees, can you?

Solemnly declare:
1 The third person in this article, please ignore if the copywriting is incompetent.
2 The main subject of this article, 1V1, CP has been determined, Daniel V Wei Changcheng
3 This article is sweet pet, loyal dog attack, as for receiving attribute, well, to be determined…
4 This article is also called “The system of rebirth is in hand, I have the world” or “Happy and happy life of the host on the planet”
5 The author is occasionally insane, please ignore it.

Content tags: harmony made in heaven soft spot system farming text
Search keywords: Protagonist: Wei Changcheng ┃ Supporting role: Daniel ┃ Others:

- Description from novelbuddy

Until the time of him becoming the master of the lowest rank in the order of rankings, the lonely side of his life without luck was changed.

I, who should have died after being hit by a car, was born again in another world.