MTL - First Player - Chapter 30 Twenty-nine

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

The war of gods left the earth no winners, but a broken world.

Noah Morgan has been labeled a loser, mocked by peers, and betrayed by loved ones. He is a man that society loves to ridicule and despise. He hits rock bottom when the person he trusted most turns against him publicly.However, just as everything falls apart, an envelope with a Phoenix stamp slipped inside his boring flat, revealing a shocking truth: Noah is the illegitimate son and heir of a secretive but powerful trillionaire.Noah inherits money and much more; he inherits a Wealth Management System, a digital interface that could assist him in expanding his wealth, unlocking hidden assets, and gaining abilities to influence people, increase his physical power, and get revenge on people who have hurt him.Now, Noah rises from the ashes with nearly unlimited wealth and resources.His enemies laughed and ridiculed him once, but soon they will learn his vengeance.

[Nakseong High School, the heads of 300 people exploded!] Lee Joon, an ordinary high school student.During the entrance ceremony, he was caught up in a strange phenomenon and died.[You have died.] [Restarting from checkpoint.] [Loading…] And then a message appeared before his eyes.『Welcome to Nakseong High School that is full of mysteries and secrets.Uncover the dark secrets hidden around the school, or fight against urban legends and myths to earn points and unlock special abilities.Then, gather companions and stop the resurrection of the demon king before you graduate.The world is in your hands.』