A/N: I wasn't sure what to do for the theme "breathe again", but this seemed like a good idea. Nothing too fancy here, but it was fun writing from Celestia's point of view.
To my darling sister Luna,
It's been five hundred years since you were sent to the moon. How are you? Not happy with me I'd imagine. I can understand that - I'd certainly feel the same way if I were you. I still feel angry at myself for having to do it to you.
Life here in Equestria has been fairly boring. I'm always busy taking care of royal matters, and sometimes, I get tired of it. But I love all of my subjects, and that keeps me going.
Still, it would be more fun if you were here with me. I truly wish things didn't have to be this way. I wish I never had to banish you - it hurt me more than you could ever imagine. But how could you turn on me like that? I love you more than anyone else in the world, and I've always appreciated your night time. I could have helped you shine, if you had given me the chance. I hope that one day, you can forgive me for the horrible things that I have done. I miss you, and I wish things could go back to how they used to be, when we were fillies. It won't be long now until you're free, and I'll be waiting for the day that you can breathe again.
Your sister,
Celestia