Overlord:The Black Blade of Nazarick

What happens when an unemployed nerdy collector and a boss of a famous company who is a young, short-sized boy who is also an elf lover are transported to a new world where they are no longer human and have now taken the form of the characters they created from their favorite RPG game? The answer is that both old friends will have to fend for themselves and improvise during their journey to completely dominate the new world they are inhabiting. 

Even if this grand mission of theirs was made possible by a small misunderstanding.