I Only Want To Kill - Chapter 4: Destruction Wand

Charlotte Meklen had crossed into the Fars Empire, seeking only to become a civil servant in a different continent. She wasn’t a combatant... But who would have thought that even clerical staff would end up on the battlefield!

He, since childhood, had followed the Foreigner to practice the Defying Heaven Art, entering the most secretive special forces and becoming a fearsome assassin that made others tremble at the mere mention of his name. After a single failure, he took early retirement, but he ended up as the personal bodyguard for a rich heiress, a school beauty. Accidentally provoking some mysterious Cultivators, he gradually unveiled a hidden world of Cultivation beyond the mortal realm...

A long life, starting from Jin Yiwei.

Completed this million-word boutique: Longevity begins with all true. Quality Assurance!

- Description from novelbuddy

The moment when mercenary leader Kwang Hwi receives video game like abilities, the world is suddenly thrown into chaos. A thick fog envelops the Earth, bringing with it savage, otherworldly monsters. At the same time humanity has been rendered defenseless against this onslaught, as the strange fog turns most weapons to rust. With mankind spiraling towards oblivion, it is up to Kwang Hwi, with his new abilities, to save the world. Watch as Kwang Hwi leads his militia and becomes the last bastion of humanity. Will he be this world’s savior, or its conqueror?