Something's Wrong with the Saint

A cannon fodder who traveled through the world of martial arts and was sent to sweep the floor in a forbidden area at the beginning. It doesn't matter, I have a system. But there's something wrong with my system – when others sign in and get magical powers, it makes me shout in public, "Everyone here is rubbish." I picked up an unnamed tombstone in the forbidden area. After bleeding, I saw a shocking secret: the "saint" respected by thousands of people today was a usurper back then. He killed the real master, rewrote the history of the world, and killed all the insiders. And my senior sister is actually the master's daughter. That soft and cute sick beauty has her pockets full of evidence and is holding back her energy to avenge her parents. She said: "A single spark can start a prairie fire." I said: "Then let's start with... Selling porridge?" The saint faction is eyeing me, the righteous gangsters are trying to catch me, and the demons are also ready to take action. My only supporters were a group of recovering veterans and a broken broom. This is the story of a handyman using a broom and a system to uncover centuries-old lies and fight against the entire world order. Slow to heat up, but has great staying power. I announce and the story begins. [The rules are established.