I Have Come for You Since the End of the World

Humanity was defeated by the virtual world created by itself. At the end of the world, professional killer Sui Xin received the highest-level mission from the United Nations and was ordered to go to the time and space three hundred years ago to assassinate a historical sinner - the scientist Ren Zhen who connected the virtual and real worlds and led to the destruction of mankind. Sui Xin met Ren Zhen, an innocent and ordinary young man in the past time and space. He was entangled between the responsibility of saving the world and killing innocent people, and fell into emotional entanglement. ————— Sui Xin: Killing is a small goal, saving the world is the general direction. Historical sinner? Wouldn't it be great if I made him famous all over the world and will last forever? Ren Zhen: (laughing) Will a real killer be soft-hearted? Sui Xin: ... It's really troublesome, so I'd better kill him.