Zombie apocalypse fictional world
This is an apocalyptic world that was slowly rebuilt after being destroyed by zombies.
The protagonist helps others but is extremely poor; he creates an antidote to the zombie virus, but is hunted down; he finally escapes, but the person he likes turns into a zombie.
After struggling until the end, he could only wander around the world with a zombie beside him.
Survival in the apocalypse is difficult, so if you don't want to work hard, just travel around the world.
Concept: Human beings are a collection of contradictions