MTL - Quest Master of Konoha - Chapter 44 behead

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.

The dust thrown into the atmosphere by the impact obscured the sky and plunged the world into an Ice Age that would last for hundreds of years without sunlight.Because of the lack of sunlight, Earth's surface had fallen to extreme cold temperatures down to tens of degrees below zero.Facing impending doom, Chen Xin was left with a shelter that he built underground and an upgrade system he found. How would he survive the crisis?Could human civilization prevail? Would the embers of hope be enough to illuminate the cold night and bring warmth to mankind?Destiny had brought forward a harsh trial. Could human beings avoid sharing the same fate as those of the dinosaurs that were extinct?

One moment, Luo Jing was at the brink of death after accidentally touching a power outlet while showering. The next, he was in the body of a man named Garen, with memories of a past he was never a part of flowing into his head. As he slowly gets used to the body of Garen, he begins to explore a planet beyond his own logical comprehension. His journey will see him go from surviving in a planet locked in the 20th century, to wielding secret techniques so powerful that they level cities overnight. However, his journey doesn’t end with Garen. Instead this is but the first of many bodies that Luo Jing will come to wield in his mystical journey between worlds.

Mission: Transmigrate world by world into a scoundrel’s body; clean up the original’s life.

Wei Mingyan is a liar, through and through. But he doesn’t see himself as such. His motto? “If one deceives others for a lifetime, then all lies would become the truth.”

- Description from Novelupdates