Devil Slave (Satan system) - Chapter 1269: A Quiet Stroll

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

Meet Sora and Shiro, a brother and sister who are loser shut-ins by normal standards. But these siblings don’t play by the rules of the “crappy game” that is average society. In the world of gaming, this genius pair reigns supreme, their invincible avatar so famous that it’s the stuff of urban legend. So when a young boy calling himself God summons the siblings to a fantastic alternate world where war is forbidden and all conflicts–even those involving national borders–are decided by the outcome of games, Sora and Shiro have pretty much hit the jackpot. But they soon learn that in this world, humanity, cornered and outnumbered by other species, survives within the confines of one city. Will Sora and Shiro, two failures at life, turn out to be the saviors of mankind? Let the games begin…

After Chu Zheng was inexplicably judged to be dead, the only trouble was – spending money.

Since the binding of this system, her waist has not been sore, her legs have not hurt, and she is not even breathing. She lives in fear of spending money every day.

System: Let’s set a small goal and defeat it by 100 million… Miss, stop! Don’t just turn on the invincible mode! (▼ dish▼#)

Chuzheng: Can you first explain what this thing holding my thigh is?

Something: Baby, you can do whatever you want.

Chuzheng: (touching the knife) Well, then I’m welcome.

System: Miss, please put down the butcher knife! ! (▼へ▼メ)

#Miss, you can really do whatever you want, find out#

- Description from novelbuddy