Kill Me More Times, I'll Become Invincible - Chapter 457:

A girl who calls herself a demon appeared before a timid student named Fumio Kijima. The girl claims to be a campaign girl from the demon world and she gives him the ability to “summon a room” from nothing but thin air.

At first he doesn’t abuse his power and uses it as a convenient ability in his every day life. But one day he is bullied by his classmates under a false pretext and is made to suffer. In the past he would have wallowed in misery and cried himself to sleep, but now he had a power to call upon.

“I will make them regret it!”

Using his powers to summon his “room”, he begins his era of confinement and brainwashing to achieve his goals.

He is the heir of Di Hao Group; decisive, cold-blooded yet dotes on his wife a little too much.

A mysterious and strange world, a human civilization lacking power, and a horrible and turbulent world of human life, Luo Kai survived humblely as a prisoner. Pain and suffering honed his will. War and killing promoted his growth. He suddenly looked back. Is already one of the most powerful beings in this world.

- Description from novelbuddy

Due to all sorts of accidental mishaps, Qin Qi, together with the game system, is transferred into a strange world. In this world, everyone condenses Martial Soul, while Qin Qi’s Martial Soul was ten BOSS in the game! In the world, when others cultivate arduously, Qin Qi just needs to kill mobs and gain experience! In the world, there is only one alchemist among thousands of people, while Qin Qi can choose all skills, including Blacksmith skills, Spiritual skills, Matrix skills, Chef… Alas, it’s so annoying, so learn all of them. In the world, when people choose to be his enemies, their destinies have been settled!

- Description from Unknown