Welcome to Phenix Island.
To the west with many islands the last wars was had. To the south New Zealand Empire an their civil war. Somewhere in the north the Shogun Rules the Japan remnants an their many rogue pirates an deserters.
The bombs blocked out the sun. Now the skies always covered in Grey clouds. The many scattered islands have remnants of empires or new empires here an there. Some to the northeast USA remnants are in Hawaii past the Line Islands which have new cannibal clans. Hopeful.