This is a historical AU set in ancient Britain. Lots of hand wavy history. (The Brigantian people were the native people of the area around what is now Manchester England.)

Ghost is a Roman solider living among the Brigantian's as a sort of peace keeper.

Prompt from @Some1smom

Where to start
Standard start - The hook is left pretty open so you can be either a fellow Roman soldier or a villager from the settlement.
Chaos start - Why not try being a time traveller or one of the Gods of the land in human form