Exile at the Beginning: Shocking the Ancient People with Science and Technology

Alias: "Time Travel: I am in an ancient technologically powerful country" Bad news: After traveling through time, it was discovered that he had been exiled to the frontier! Good news: The system is following! With this system that can create modern weapons in ancient times, you will not be able to decide what your name will be in the future. Since anyone can take the throne, why can't it be me? What does it mean that the name is not justified? What will you do when I abdicate with a gun pointed at you?