Iron Blooded Hound - Chapter 186 - : Night Hound

One of the top expert killers, tired of endless assassinations and having survived a cruel and suppressed life, decided to escape the world’s strictest assassin organization.

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

Wei Suo, a low level cultivator from the Spirit Peak City was scammed in a transaction. He ended up purchasing a damaged low level magical treasure. However, this worthless damaged magical treasure had an artifact spirit that already lived for several tens of thousands of years… On top of that, compared to several tens of thousands of years ago, many of the rare and sparse things were abundant now.

Xerox Zee had always thought of himself as an ordinary guy—just another face in the crowd. That was until his 18th birthday when his System finally gets Unlocked!.The System revealed a shocking truth: the world he lived in was exactly the same as the plot of a novel he had once read!But instead of being helpful, this turned out to be a big problem.Main Character : “I’m meant to save the world and become the strongest. Everyone else is just there to help me along the way!”Xerox Zee : “Hold on... am I just one of those people there to make him look better?”It seems like I'm just a stepping stones!