Exist? Please Sell Me

I don't know when or where. A mysterious factor that has never been discovered by humans - 'G' - was born, which eroded the entire planet's environment in a nearly annihilating manner. The ecosystem is experiencing a new round of reshuffle, and the world pattern has undergone major changes. People were deprived of their familiar habitat, and since then they can only hide behind the purifier and rebuild civilization step by step. Hundreds of years later. In the Qiliang stable area within the federal territory, Xiu Si, a young man who loved fighting and was born in a slum, met Tiger, a wandering nobleman from the empire. In order to fulfill his father's last wish, Xiu Si proposed to sell himself. With this as a starting point, a journey centered around interests and honor officially begins.