I Kill Myself at the End of the World

When the world collapsed and civilization fell into ruins, Zhou Yu survived. He struggled to survive and traveled through the dead city strewn with corpses. His only belief was to find his missing family. Until that day, in a broken mirror, he saw "him". "He" looks exactly like Zhou Yu, but his eyes are cold and decisive, and there is always a weird smile on the corner of his mouth. "He" would calmly hand over the weapon to Zhou Yu when he was most frightened; "He" will use the most vicious words to force Zhou Yu to move forward when he is at his weakest; "He" taught Zhou Yu how to plunder, how to betray, how to... Do whatever it takes to survive. Zhou Yu hates "him" and is afraid of "him", but has to rely on "him". Because "he" is the most perfect survivor in this doomsday. And Zhou Yu is just a sentimental "burden" in "his" eyes that needs to be eliminated. In order to survive, one of us must die. And today, I decided to... Kill myself.