πI recommend a novel called "From Arms Merchant to King of War". It is a novel about urban special abilities. The main character, Su Hao, obtained an all-rounded system "King of War" in the civil war of Niar, a small country in the Black Continent. From a small arms dealer, he became a veritable King of War. The plot is compact and exciting. At the same time, it covers the romantic elements of the underworld. It meets your requirements very well. I hope you like this fairy's recommendation. Muah ~π