The Dark Rebirth of Pandora: Revenge of the Abyss - Chapter 281: Worsening everything

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

After being expelled, the ace soldier Chen Feng returns to the city and inexplicably becomes the fiancé of a cold and aloof campus belle.His life as an extraordinary figure begins by stepping on arrogant second-generation heirs and embracing the goddess campus belle.

Sing the story, bard, of the Firebrand. He, the youth who saved Morcaster from ruin. He, the warrior who defeated an empire. He, the archmage who crossed the Netherworld...The tale of Martel the mage, from his humble beginnings as a hapless novice at a magic school. Slow, character-focused and light-hearted progression fantasy. Updates daily.

Hye lived his entire life without a class. After the apocalypse hit the human world, strange creatures invaded and killed humans while new lands were being added.

Systems were given to humans and with the help of the guides, humans started to fight back for their lives. All of this happened under the watch of the venerable beings who were shining stars in the sky; gods!

Hye dreamt his entire life of a chance to prove himself. He was a hard working, earnestly learning and smart youth. However, the apocalypse never was merciful to such humans at all.

Until one day he got a chance to go back in time, when everything started. At this new starting point, he found himself able to finally obtain what he wanted, a class for himself and power beyond imagination.

But will things be this easy for him?