When they arrived at the Canterlot Archives, they walked inside and searched behind the tomes containing magic spells and ancient poems and stories to find some history books. "No, no, no, no…" Twilight went on, levitating over tons of books in a row and checking through them at incredible speeds. Meanwhile, Celestia wasn't having much luck either. They kept searching, flipping through tons of books and trying to find some occurrence of the type of creature that was like Snowflake. And once they'd turned the entirety of the archives upside down, they felt about to give up. "Well, there aren't any other books here…" said Twilight. Celestia sighed and flopped down onto a stack of books, several of them flew out and one crashed into a bookshelf, knocking off a book with a dust-covered, dark purple cover onto Twilight's face. After the initial shock of it, she raised an eyebrow when she saw the strange markings on it. The pages were yellowed with age, but they were all intact and the script wasn't the slightest bit faded. "This is Old Equestrian," Twilight said, "Celestia? Can you read this?"

"Of course, Twilight!" said Celestia, levitating the book over, "It says… wait… Twilight! I can't believe you found this!" She turned to the cover, keeping it open to that same page, though. "'DIARY' is the only word on the cover," said Celestia, "This is the diary of somepony! Great job, Twilight! It wouldn't be in this library if this wasn't somepony important!" "Um, thanks!" said Twilight, "Can you read that section, though?" "Sure," Celestia began again.

"April 29," Celestia read aloud, translating the script, "Dear diary…

Today, we met a tribe of humans that live near a forest. They seem to have impressive magic, but it's derived from some small pieces of… well… we aren't sure yet. We will annihilate these humans, if it's the last thing we do! They captivated us, encaged us… we do not have the magic… or, as they call it, technology… that they do, but we have our magic and our forces. Besides, these humans have lost their 'planes' and their 'fighter jets' as they call them, so they can no longer compare with our pegasi in the sky. This is going well…"

"This is ridiculous!" exclaimed Twilight, "So not only did we have experiences with these creatures… humans, they're called… but we hunted and killed them?!" "I believe so," Celestia said solemnly, "Would you like me to continue?" Twilight sighed. She didn't exactly want to hear any more, but she did, but she didn't… "Yes," Twilight said finally, doing it for Snowflake's sake.

"May 1," Celestia continued, "Dear diary…

We've nearly destroyed all their resources. They're boxed in, and we're gathering our troops for one big assault. From our math, there are exactly 20 humans left there. We could just let them die, of hunger or thirst, but we aren't monsters. We're ponies, and we plan to stay that way. We don't want to destroy ourselves like the humans did. No, we will organize a land of harmony and order and discipline. And I will plant the Tree of Harmony, deep within the forest, immediately after we destroy the last of the humans. I have figured recently that I will give names, unlike human names, that mean something, to all who follow me. I believe I shall make a name for myself as well, other than just the letter C. That's not a very good name, is that? No, I don't think it is. I know of a name for myself, I shall write it in the back of this book."

"Don't skip to the back of the book quite yet," said Twilight, "We want to see the rest of this first." "Good idea," said Celestia, "But whoever this is, she's perfectly insane!" "I'd agree," said Twilight. Then Celestia continued.

"May 6," Celestia read, "Dear diary…

We've corralled our forces. We've launched our assault. We've diminished them, and now all that remains is the destruction of the humans. I have planted the seed, the Tree of Harmony is growing right before my eyes. It is a beauty, indeed. My cutie mark, as well as my sister's, I am carving into the trunk of the tree. I will also carve our symbol for magic into the center of the tree. The rest of the clan want my sister and me to be appointed as the rulers of this land, and I have agreed. I will write my sister's name in the back of this book as well, now that I think about it. But to become ruler, I will erase my memory of the events up to now, as soon as this war is over, and I will place this book in the Canterlot Archives, which has recently been built. We decided to name our cities after human cities, to give a sort of 'last rights' thing to the now-dead race that created us with their virus."

"Are you thinking the same thing that I am?" Twilight said. "No, I don't believe so," said Celestia, looking confused. "Um… keep reading. I'm sure that the book will tell us," said Twilight, not knowing what would happen if she revealed it to Celestia before she was ready. However, they were only two pages from the back of the book. She'd find out real soon anyways.

"There's a line across the page, and it says, 'that afternoon…' on it," said Celestia.

"Keep reading," said Twilight.

Celestia nodded and continued, "Dear diary…

THIS IS COMPLETELY RIDICULOUS! I CAN'T BELIEVE THIS HAS HAPPENED! IMBECILES! I… need to calm down. Regardless, I have been informed recently that one human got away, and was magically teleported someplace else! One. Human. Child. Got. AWAY! Well, regardless, we have forged a set of magical gemstones that represent five important values in our culture, so that we can kill this child whenever it reappears. We have been informed that it can only have gone into the future, though we don't know how far. But I will erase my memory soon. Very soon. The war is over. But we cannot seem to tame the last of their world, the forest near their last town. We will simply loose the rest of their monstrous creatures into the forest and warn everypony to never go in there. We must give it a name, but not a formidable name… the Everfree Forest. Yes, that's it. The last thing I need to say is that we will never be second-class citizens again. Never be slaves again. And we will design our culture to be different than the humans, so we will not destroy ourselves. I believe this is my final entry. Goodbye, memories, goodbye, self. And most importantly… Goodbye, humans."

Celestia turned one last page, to see what was written in the back of the book. To see the names of this insane pony and her sister. And Princess Celestia took one look and couldn't say anything. She couldn't say one little bit. "Celestia?" asked Twilight worriedly. Then the world seemed to move in slow motion, as Celestia's magical grip on the book was released, and it fell to the floor. It made a soft THUNK as it hit the ground, falling open to the back of the book. Twilight looked down, and her heart nearly stopped. Her suspicions were correct. Written in Celestia's signature writing, in shining black ink, were two names.

"Celestia and Luna," Twilight read aloud.