Jade Country (ジェイド国) is a country of four seasons with a cold northern region, where the town of Spirit is located. The town of Spirit had an old castle to the north, the setting of an old legend that frightens potential visitors. The legend became particularly relevant when similar circumstances made themselves known in the present day. The castle itself was in ruins, separated from the town by a fast-flowing river that cannot be crossed via conventional means. A device in the castle was capable of stopping the flow of water, and a series of stones beneath the water's surface allowed travelers to cross.