The End of the World: My Pet Can Evolve

Mike travels to a post-apocalyptic world. The world is full of zombies, the city has become dilapidated, and there is a serious lack of water and food. As the protagonist, Mike has gained a domestication system, and pets can be upgraded and evolved by killing zombies. A small*, upgraded and evolved into a violent three-headed dog. A little bird, upgrades and evolves to purify Xuanwu. A mutated cat, upgraded and evolved into a mutated and bloodthirsty tiger. This novel is purely fictitious. Any similarities are purely coincidental and should not be imitated. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.