Rule Dealer: the Rules of the Supplementary Pavilion

Under the surface of modern cities, "weird events" are increasing year by year. Each weird scene has its own rules - if you follow them, you will live, if you violate them, you will die. Very few people can "perceive" the rules, and even fewer can "extract" the rules and encapsulate them into tradable "rule objects". The rules are divided into five levels: white, green, black, yellow, and purple. The official organization "Anomaly Management Bureau" is responsible for control, there is a private "Rule Dealers Alliance" to do business, and there is also a group of "Rule Devourers" who enjoy breaking the rules and devouring other people's abilities.