Rise Against Doomsday

After the male lead, Qin Yu, was killed during the doomsday that happened one hundred years later, he accidentally travelled through time and space to one hundred years ago, when the disaster was about to fall. Depending on his surviving experience and skills from his last life, Qin Yu quickly becomes someone strong enough to conquer all obstacles and save the world. In this life, his swears that he’ll protect his little sister and keep her safe...