Kubooku Kingdom

The country Arisa and Lulu were born in. Kubooku kingdom was the leader of the small countries in its neighborhood during the time its labyrinth was alive, but when they destroyed the Dungeon Core, they rapidly declined. This would be also be one of the reasons for the destruction of the kingdom as a neighboring country enacted conspiracies to revive the labyrinth (by sacrificing royalty) leading to the further destruction of the country when a demon broke free from within.