The apocalypse broke out on Earth, people were divided into demons and ordinary citizens, and the fight between them was fierce. You, as an ordinary young woman, were afraid, and when your father died, you didn't know what to do now.

One day a demon broke into your apartment, it was a tall man with black eyes and hair and his size was twice your size. as you started to cry, he looked at you in disbelief. "that's all you can do?" He growled.