Travel Through Time and Become a Villain: the Most Powerful Undercover Agent in History

Xiao Yesian, No. 369, Is an ordinary investigator, honest, harmless to humans and animals, and even a bit useless. Originally I just wanted to live a peaceful life, play video games, flirt with girls, wouldn't it be great to be a salted fish? But... "Sirius, you are already the hope of the Supernatural Investigation Department, and the task of saving the world is left to you." "Nima, when are you going to close the net?"