I Am Extraordinary Alone - Chapter 22 - 21: Desperate Ground

With the revival of spiritual energy and the breakdown of the order of species, it is a difficult test whether human beings can still stand at the top of the biological chain.

(There is already an old book, The Strongest Descends in the City, you can read it.)

- Description from novelbuddy

Shu finished the final chapter of a hated apocalypse novel, only to wake up inside it hours later. In Zoxhia, dungeons open without warning, monsters flood the streets, and even the strongest heroes die miserable deaths.The only reason Shu has not joined them yet is a cheat no one else has ever seen: a Domain that can grow into an absolute safe zone. Armed with incomplete knowledge of the story, a dangerous system, and a world already heading for ruin, Shu has to survive, grow stronger, and change an ending where the demons win and everyone dies.discord: https://discord.gg/WkyX6NuZZA

A young man playing games in his basement is struck by a mysterious bolt of lightning, killing him instantly. However, he wakes up in the body of a disgraced young lord, now tasked with managing a ruined, crumbling kingdom. With no experience and a tarnished reputation to overcome, his future seems bleak.Fortunately, he possessed the Omnishop System, a mysterious tool that enabled him to purchase skills and supplies as well as upgrade his existing skills using points. Rebuilding the kingdom is no easy feat, but Alexander has his sights set on more than just survival.With ambition burning in his heart, he dreams of ruling an empire, if he can survive the challenges ahead.

Hiding in the Cold Palace and eventually becoming a Boss of Sorts. Li Mu was transported to a fantastical world and became a measly eunuch of the State of Xia. Despite having initially thought that his life would be a miserable one, he had unexpectedly acquired a check-in system.