Eight years ago Rainbow promised never to tell let anypony know she had a child, it was better for everyone that way. Even when that child moved to ponyville. Even when that child wanted to be her little sister. Everypony knows that chasing daylight always ends in heartbreak.

Thanks to ChudoJogurt for editing.

This was written off a prompt from someone who doesn't want to be associated with the story because of the opening scene. He gets exactly 6.9 percent of the credit.