In a dark alleyway on the streets of Yorul, a person wrapped in a cloak moved silently.
It was very hard to find a place as dark and filthy as this in Yorul, which was the capital city of Atlantis, named after its founder. Since it is the chosen ground of the highly exalted founder, the residents try their best to ensure that it was safely and cleanly kept. It was seen as a sort of Holy Land that the purest and wisest of the 3 original merfolk, Yorul had decided to set up his kingdom to ensure his people flourished.
Eventually his followers became so numerous, they had to create additional cities chosen by Yorul himself, which began the five nations of Atlantis. Since his death, the residents refused to create an additional city since they assumed it would be an offense the first king.