Flashback.
It was a month or so after the Tenrou Island incident when Lucy and Levy were at her families (Heartfillia's) old estate. She knew there were a lot of books there and wanted to go through them before anything happened. So she asked Levy to help her.
"Wow Levy, look at some of these books, there's stuff on ancient magic, even a history of Ishgar!"
"Ishgar, isn't that what the world was known as hundreds of years ago?"
"No it was like a country 400 years ago. I think." Opening the book Lucy is dismayed that it's in a language she cannot read. "I don't recognize this language, do you Levy?" handing Levy the book
"It's Philoppean; it hasn't been spoken for at least a couple hundred years. But I think I can figure it out."
"You should take it home and read it; if it's 400 years old it may have information about Zeref and the dragons and stuff."
After the two girls finish their tasks they head back to Magnolia.
~x~
Back in her apartment at Fairyhills, Levy takes out the book and starts to read it. Looking through the Table of Contents she sees a chapter titled, "Anna & Aconologia" and flips to that section. She skims through the chapter.
'Sometime around year X390 there lived a powerful Celestial Spirit Wizard named Anna who fell in love with a then man named Aconologia…Anna was not just powerful but beautiful with long blonde hair, big brown eyes, long legs, and a well-endowed chest… This man loved her, but he was too consumed with hatred of the other humans around him…. Wars were starting to spring up all over the world, a battle between the humans and dragons.Some of the dragons sided with the humans while others merely saw them as prey…..Aconologia seized the opportunity to gain power and was able to convince a Dragon to teach him Slayer magic.But the more power he gained the more he wanted, and the more hatred built inside of him.He even began to bathe in the blood of the dragons he killed…During this time Anna tried to convince him to stop but nothing she said could change his mind… Realizing she was now pregnant and fearing for her unborn child's safety she went into hiding from Aconologia…..… During her hiding, she delivered a healthy baby girl whom she named Ryuu Tamashii (Dragon Soul) …... At some point she met a black mage named Zeref who told her of a plan to stop Aconologia.With her Celestial Magic and the use of a time gate, they could send 5 Dragon Slayer children along with their Dragon parents to a time 400 years in the future when etho-nano would be much stronger.The hope was that they would be get strong enough to defeat him….She agreed under one condition, that a 6thchild, her now 6 year old daughter would be sent with them.He agreed…Careful calculations were made before the plan could be put into fruition…They had to be certain that when the children arrived there would be someone to open the time gate for them so with Zeref being immortal he would be the one to make contact with a Celestial Spirit Wizard at that time in the future to ensure the opening…Anna suggested that a descendant of hers would be the obvious choice….Shortly before the children were sent, Anna prepared her daughter.She wrote a note for her descendant explaining everything from who the child's father was to the powers that may lay dormant inside her.She begs that this person to please care for Ryuu like their own daughter but to never tell Ryuu her real name nor where she actually came from.She feared that if anyone found out her past they would try to hurt her….Finally, it came time to send the children and Ryuu to the future.For the journey, Ryuu was entrusted to the Flame dragon and his son as the two children had become quite close…..'
Levy puts the book down a moment. 'If I am reading this correctly, there is a 6thdragon slayer that we haven't seen yet!This is big news! I've got to share this with Lucy.'
Gathering the book, she heads to Lucy's apartment. It's getting late but when she arrives she sees the light is still on. Running to the door she knocks, "Lucy, it's me Levy."
Opening the door, "Hi Levy, what are you doing here so late?"
"I've been reading the book we found and I just had to share what I've learned with you!"
They sit on Lucy's couch and Levy begins to retell what she has read so far. Once she got to the point of the children being sent she stops. Lucy who had been quiet the whole time just stared in shock. "Lucy a-are you okay? You look like your about to have a heart attack."
"We can't tell anyone about this book Levy!"
"But why? We need to tell Master..."
"Levy, The woman you described, it sounds like you just described me! Anna was my ancestor!"
Cupping her hand over her mouth, Levy is shocked, stammering she replies, "You're right, I didn't even realize. Wait! That might mean she's not your ancestor, but mother! You might be the daughter of Anna & Acocologia! Oh my Lu-chan I think that 6th child is you! That means you're real name is Ryuu and you are a 6th dragon slayer! But not like the others who were taught Dragon Slayer magic, you were born one."
"Levy give me the book, I'm going to hide it for now, we never saw it, we never had this discussion. Please Levy promise me you'll never speak of this to anyone!"
"But." She stammers
"Levy Promise me!"
"Okay Lu, I promise."
"This is just too much to take in right now. I mean I've never shown any signs that I might be a dragon slayer. Maybe I didn't inherit his magic. I-I need to sleep on this." Stutters Lucy.
"Oh, okay Lucy, I'll see you tomorrow at the guild okay. Try not to worry, everything's gonna be fine." She smiles. She hugs Lucy and then heads back to her own apartment.
Lying in bed that night, Lucy can't seem to fall asleep. 'Could I really be Ryuu, that would make me 400 years old. Wait so Layla and Jude aren't my real parents but that also means Aconologia is my (gulp) real father! No that can't be right! This is just crazy! Absolutely nuts!' Sigh, 'The flame dragon and his son…. that couldn't be?' As she finally drifts off to a restless sleep.