Black Invasion

Shen Qingshi went to the Middle East as a mercenary under the pseudonym Charles to save his comatose sister. Accidentally invaded by alien civilization. His teammates died tragically, the base was destroyed, and he narrowly escaped death in a desperate situation. From a loner who just wanted to protect his loved ones, he gradually grew into a guardian of mankind. This is a desperate battle for all mankind against a civilization across galaxies. [No system + no cheats]