The Regressed Demon Lord is Kind - Chapter 572

Chen Rui, an otaku from earth, is reborn into a human body in another world, who falls into the legendary evil, brutal world of the devil called Mozu where humans are treated as food. He has to survive while facing horrors of the devil, violent dragons and a variety of power enemies depending on a strange super system chip and his wits. Surrounded by Devil’s beauties such as black-bellied lolita princess, cold queens, violent dragons, charming poisonous devils …

Wanting to live in the Devil’s world is hard! Wanting to live in the Devil’s world as a human is harder! Wanting a human to be the devil’s son-in-law is hardest!

Let us see how a small otaku uses power and strategy step by step starting from an ordinary human to writing a legend as the devil’s greatest son-in-law.

- Description from Novelupdates

(A/N: If a ruthless MC is not your cup of tea, don't read this.)Heat Wave, Torrential Rain, Severe Cold, Tsunami, Flood, and Alien Beasts swept the world in a series of natural disasters, almost wiping out mankind.Lu Nanzhi regressed two years to the past and found out that the settings of the natural disasters was similar to the mobile game app she played before regression.And it was in the beta testing phase.Ding—[Beta Game Test is over.][Data is being reset.][Player is starting over.][Please claim the Beta Test Rewards.]Equip with the Beta Test Rewards, Lu Nanzhi was determine to survive in this life and started stockpiling like crazy!

The free-spirited and brutally honest Ye Zhen Zhen was unwillingly chosen as Empress to the playboy Emperor Ji Wu Jiu. Their very first wedding night, she kicked the Emperor down from their bed and he sought out his concubine instead. This completely disastrous start was only the beginning of their eventful life together.

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