My Little Death Note; Killing Criminals is Justice!

"Sister...are thou sure that this is ethical?" A cool voice asked, concern apparent in the alicorn's face, as she glared at the black notebook, preserved under a glass dome, "We both know what happened last time you decided to use the notebook as a test of moral."

"I am aware, believe me little sister." Celestia replied, rubbing her muzzle, as she lifted the dome in a shimmer of gold, "Yet, I trust Twilight Sparkle, as if my life depended on it, you as know that we have to test her sense of justice. It will prove that she is that much closer to being ready."

"ENOUGH!" Luna bellowed, though Celestia expected it, "Sister, thou are acting foolish! If thou truly believe that sending that damn notebook to such a young pony is justified, then you must be insane.  You know that it corrupts, even the strongest of ponies can succumb to the power of it."

Celestia sighed, breathing in deeply, she'd rather forget what happened the last time a notebook as given to a pony.

"Luna, as I said before, I trust Twilight to make the right decisions, along with her friend's aid, she will succeed."

Before Luna could say anything more, or had she being paying closer attention to her sister, she would have noticed the black book slide into a manilla envelope.