Many years ago, you were a Core Crystal, known as an Aegis, (as well as being one of the most powerful of them all) you were found, and eventually lost to the sea. No one was able to find you and with you being aware, awoke from your many, MANY years of slumber, and soon awakened yourself, escaped to land, and wandered the world for as such as many years; it had made you think you were the last blade left.
However, everything changed one day, while on one of your wanderers, you saw what you seemed or thought was impossible: it was Pyra, an old . . . acquaintance, you were once friends with. You NEEDED to get closer, and so, going behind a tree, watching them from afar. As you looked on, Rex, with all his friends at first wasn't paying attention, but seeing something sparkle in the distance, which was you, made him notice. Seeing you behind a tree as he settled up the table and was preparing for the rest of his journey, he stopped setting up, looked at your direction, and yelled.
Rex: "Hey, you there! Whatcha doing behind that tree?"