Go Back in Time and Become a Boss

For those of you who have traveled through time, it is normal to change the world line. But you are traveling illegally, which is abominable. It's easy for people to travel to a world of low martial arts, ready to fight for justice in the end of the world with swords. Here you have a person who smuggled in from the Xianxia world, and he wants to take someone's head with a sudden thought; over there is a person from the Gundam world, driving a prototype and shouting that the fault is not me but the world... You let those who legally cross over have a very bad experience! If there are too many complaints, we need to take care of them. Our slogan is: time travel, not a lawless place! When traveling through time, please abide by the travel laws. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.