This was so sweet and clever. I love the unique multimedia and structural choices you made -- they really set this apart from the usual reincarnation fics. I also bit my fist to keep from squeeing out loud when I read this:

Arthur mouths a smiling noooo at the same time as Merlin mock whispers a not very likely no, spreading a bit of wayward magic into the room when Arthur kisses him between the eyes, perhaps a bit by accident, not quite having learned how to keep it in.

There's just something about it that touched the sugariest part of my soul and made it sing.