MTL - American Comic Survival Guide - v2 Chapter 748

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

Three years ago, the animals and plants on Earth underwent crazy and unexplainable changes that included transformations, reversions, and the addition of otherworldly species. And it was the start of a brand-new type of profession in the new generation of humanity – Monster Trainers, people who specialized in taming monsters.

—〔WSA 2025 ENTRY〕—What happens when fate twists reality itself? What if someone finally obtains the one thing they've longed for since birth?Arvian got reincarnated into a horrible novel after performing a ritual to claim mysterious rewards offered by Webnovel—the Webnovel System and an Exclusive reward.Waking up in a cave surrounded by a villainous organisation, Arvian found himself; luckily, he was reincarnated with his own body.He sees cruel people, bloodlines, demons, reapers, monsters, and elves, and unfortunately gets dragged by UNHUMAN MISSIONS.Follow Arvian as he finds himself stuck with unhuman missions after failing a mission.Ding!][System Initializing...]...[All Activation Conditions met][Webnovel System Activated!]Congratulations! The Webnovel System has been successfully activated![Webnovel System]:「Gain 3x rewards for completing quests, missions, or eliminating enemies.」「Access the Novel Store, where you can purchase any item or ability of your choice from the novels you have read.」