Welcome to the protagonist Qi's Nth day of survival in the apocalypse.
In order to protect themselves, they hurt each other and stabbed their brothers, and they killed others for supplies. Every evil person will be punished by his own evil, there will be unsatisfactory retribution, mutual calculations, mutual distrust, and other factors.
The story begins: Qi is a college student who has just received the admission notice. Before he could be happy, he was suddenly exposed to mutant creatures, city-falling human mutations, etc. In the fourth year of his struggle, he met a similarly unfortunate man who was killed in a mysterious and inexplicable way in order to save him. How do you reset back to four years ago?
Purpose: Savior