Oreta Ryuukotsu

Three days east of London in the North Sea are the Solon Islands, a group of two islands, Solon and Lesser Solon. On the Solon Islands, towns spread out, and the lords of the Lesser Solon ruled a benevolent government. However, a mysterious death of an old guard on the island, which is a time of quiet and peace, marks a major turning point in the reign of the islanders.