The Last 3 Rulers of Nazarick
What if Momonga was not the only one left in Yggdrasil. And he was spending his 'last moments' in game with his sister (Mellisa - the Arch devil) and Friend (Y/N - The Grand Kitsune) from the guild (disclaimer- I don't own any of the art used in this story and would like to give credit to their original artists)