This is my first try writing in English, so I apologise if it is awful. This is the prologue of what, I hope, will become a full story.

Disclaimer: I do not own BBC's Merlin.

Two sides of the same coin. The first thing that comes to mind is equality, wholeness; after all, like Kilgharrah always says, one half cannot hate that which makes it whole. Yet nobody can see the two sides at the same time. Kilgharrah says there is balance in their bond, and Merlin imagines the coin flipping in the air. One side is up, the other down and then their positions reverse. In some things Arthur is better than Merlin and in others Merlin is better than Arthur. They balance each others weaknesses and because of that Merlin can sometimes truly believe that they are two sides of the same coin, a same entity. And yet he cannot stop himself thinking when he is alone in his small room reading his book of magic, a book that would see him killed if someone knew about it: when the coin hits the ground, what side would one see? And what side would stay forgotten?