Princess Luna had been waiting for this day. Today was the day she got to sit in the castle alone, without any chance of Celestia walking in on her and bombarding her with questions, or the guards rushing in to complain about who knows what, which always seemed to involve another guard, or anything, really. She was just about to settle down for the night when something crashed through her window. Upon closer inspection, she realized it wasn't a thing...but a pony...