[@Nightmare Bites] Oh good.

I prefer OCs but don't really mind.

I don't have many ideas but I thought it might be cool if there were other human settlements than the one in the anime. Given that the earth is the same size it would make no sense for there not to be at least one other group of people who could build a fortress. Maybe the RP could start with the fall of another settlement, with the players being the few survivors?