Controlling Beasts Starts from Becoming a City Lord

He accidentally traveled to a different world and became a city lord who was about to go bankrupt. As soon as he came to this world, he learned that the beast tide was about to break out, and accidentally became a beast master. Within a few days of enjoying his time as the city lord, the strongest beast tide in prehistory ushered in a large-scale invasion of tens of thousands of beasts. What should I do? Urgent, wait online!