Introduction. I don't know how to write an introduction. It's probably because pollution broke out in the Fn galaxy overnight. Most people died because of the pollution. Only a few people survived because they had certain antibodies in their bodies. This antibody combined with the pollution source will cause humans to grow organs with certain animal characteristics (atavism? It's interesting)
He Ye woke up and found that he had lynx ears on his head. Just when he was in disbelief and thought that he was being manipulated by fate, there was a knock on the door...
I was just screwed by fate.
A few months later, He Ye looked at the person who suddenly appeared in front of him, who looked exactly like him except for the absence of animal ears, and claimed that his name was He Shi and that he was his past self. His eyelids twitched, and he realized that things were not simple.
(Also, He Shi appeared a little late, so let's take our time and don't rush)
Purpose: Probably to save the world