Miraland is the world Nikki is summoned to from Earth. It consists of 7 Nations: the Northern Kingdom, the Cloud Empire, the Apple Federation, the Lilith Kingdom (previously known as Ninier), the Republic of Wasteland, the Pigeon Kingdom and Ruin Island.
Due to a "Blood Curse" that everyone in Miraland is born with, anyone who resorts to force will be punished via suffering unbearable physical pain. As such, the nations have made diverse alliances and oaths to keep the peace and protect themselves. Violent wars are replaced with styling battles of different kinds and levels.
One of the biggest reasons why the Northern Kingdom breaks these truces is that one of its leaders believes this peace to be fake and non-beneficial for the continent, therefore he aims to destroy it and rewrite the "rules". On the other hand, the Pigeon Kingdom and especially its Queen believes that Pigeon has a role as a peace-keeping land, which must be kept at all costs. When the Northern Kingdom starts an open war via attacking the Cloud Empire, she immediately declares war on North and sends her Iron Roses Stylists to aid Nikki, the person who can potentially bring the peace back.
The name Miraland is short for Miracle Land.