A geopolitical region occupying the northern portion of the continent formerly known as Greensward Kingdom. The Common Coalition was established following the Darvi Channel War, which divided Greensward Kingdom into two entities: the Common Coalition and the Oriri Nation. The coalition comprises six principal countries—Tovsta, Chokurd, East Aieru, West Obion, Krasnoy, and Poggi Gano (the capital). It shares its eastern border with the Oriri Nation’s territories of North Taigo and South Taigo.

Characterized by harsh terrain and a climate that remains cold for nearly half the year, particularly in its northern areas, the Common Coalition maintains a largely traditional lifestyle. Technological advancement is minimal, and there is limited adoption of innovations emerging from the Oriri Nation or medical progress seen in the Universal Federation North. Infrastructure reflects its historical roots: most buildings are centuries old, roads are uneven and rocky, and vehicles are typically older models passed down from neighboring regions. Despite external perceptions of poverty, inhabitants are generally content with their way of life.