Soaring of Galaxia - Chapter 724 - Profound Theory in the Formation

Yu Zhengdu joined a small start-up company that claim to offer “life management services”……as a programmer.

On his first day in office, he received a phone call from a stranger: “Hello, I received a text message from your company that informed me of my reincarnation tomorrow……”

Yu Zhengdu: “……??”

Shang Que, the beautiful little boss, said, “New employee, welcome to the Hell organisation in the human world. A thousand years ago, I was known to the human world as the Ghost King of Luofeng Mountain.”

Yu Zhengdu: “……??” From then on, he was incredibly distressed about the development of Hell.

- Description from Novelupdates

We were a peaceful people living in harmony with nature in the vast lands of Lyréanor, but this peace was short-lived when our people were defeated by the dark elves, an ancient people even older than this world. It is said that they arrived in Lyréanor by boat and since their arrival, chaos has been unleashed. Proud of their obscure power, derived from dark rituals, they have raised gigantic armies of monsters whose name is synonymous with terror: ‘Obscurus’.They went on the rampage, and everywhere they went the grass didn't grow back, life died and disintegrated. Seven, there were seven. The seven dark elves known as the Lords of the Apocalypse. A single gesture from them was enough to strike us all down, a single gesture from one of them was enough to decimate us in blood and terror.And as I, Foster, contemplate the macabre scene before me, the bloodied and deformed bodies of my fellow elfes beings, and as death grips my soul, a strange sign appeared before me.[Ding... Activation of the world tree system]

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

“You dragged me into this world. Now you kneel in it.” — Tim SlokovBy day, Tim Slokov was a quiet office drone. By night, a ruthless online critic of fantasy novels. But when a mysterious force transmigrates him into the dying body of an elven outcast—doomed and powerless—Tim realizes he’s become the tragic background character of someone else’s story.Only he refuses to die quietly.Denied justice, Tim is granted a single gift: the Shattered Necromancy System, a broken power fueled by death itself.[Seek Me, O Death — Passive]: Every kill becomes a servant. Every soul feeds his army.[Death Embrace — Active]: He becomes what he commands—gaining the power of his dead.[Arise — Active]: The battlefield becomes his stage, where his fallen rise again.Armed with cursed power, Tim must evolve himself—and his ever-growing legion of the dead—to claw his way up a world that wants him erased. But vengeance is only the beginning. As his strength grows, so does the truth behind his forced arrival... and the god-like force that wants him broken.Tim isn’t here to play the hero.He’s here to rewrite fate—one death at a time.