The Eerie Lord of Thomson Estates

The people living at Pinnacle Residences are anomalies rated SSS, and the man they all defer to is the building's security guard, Ethan York, who finished school at the bottom of his class. He took the job after graduating, around the time a system attached itself to him. Every dollar he earns makes him stronger. Anomalies had been turning up all over the world by then, and the Anomaly Bureau is the body that deals with them. Money being the thing Ethan needs, he starts squeezing the Bureau for it, then pushes anomalies from elsewhere into signing on as tenants so that their money comes to him as well. Bureau officials, spirit tamers sent in from abroad, anomalies rated SSSS and the Anomaly God itself all end up paying, and each payment moves his level up. Official forces and outsiders come to the complex to take hold of whatever it is that sits underneath the place, and none of the attempts get anywhere.