The Great Cataclysm: Mutant Species in the Apocalypse

It is worth appreciating. When I first read the title of the book, I thought it would be a cliche post-apocalyptic rebirth story. Unexpectedly, the further I read, the more attractive it becomes. 1. The male protagonist is an ordinary and transparent person who accidentally acquires the abilities of cats and dogs and becomes a mutated human being. 2. The plague is devastating, and the male protagonist strengthens himself step by step to compete with the Rat King 3. The male protagonist leaves the small county town and meets the female protagonist by chance, and they travel together, making friends or becoming friends and foes.