"What" everyone yells
"Let me finish the story,"
In our kingdom it is tradition that the younger sibling always protected the older sibling. The younger sibling learned all the elements but one celestial dragon slaying which is saved for the queen. The real reason is Akane was angry was she risked her happiness for Lucy to have a good life.
"Now I feel really bad for what we done" says Natsu
As you figured out Lucy and Akane have different dads the kingdom suffered since Jude was not a dragon slayer and he was not allowed to be in the Realm she had no one so Zeref made a deal in exchange was for her to bore his child. She hesitated at first but to save the kingdom she agreed then Akane was born. After a 6 years Layla had enough of Zeref evil ways and snuck out with Lucy and Akane. but it was not long until thousand guards came after them Akane stopped in front of the portal and said go though i'll hold them off. Layla knew Akane couldn't hold them off. "Don't worry mom i'll be just fine believe in me and if I don't show up never come back" Akane says. Akane pushes them both through and takes them on. Then she went through torture to open the portal cause only people with the bloodline could open it. So she waited until the chance to see Lucy again. When she got the chance she opened a portal and went although in due time Zeref will find a way to open the portal. So we don't have much time we must train Lucy and find the new prince and king. Which can only be a dragon slayer.
Now since you know everything I will announce the people picked to be the prince/king
Natsu Dragneel
Gajeel Redfox
Laxus Dreyar
Gray Fullbuster
Lyon Bastia
Rogue Cheney
and Sting Eucliffe
(A.N There is more people you'll meet later)
"Wait you said dragon slayers could be the only one then why did you mention the two ice princesses?" asked Natsu
"Well because Ur their teacher was a dragon slayer since they were taught dragon slaying magic so there are in the race." says Akira
"Wait I don't know dragon slaying" says Gray
"Ice Make is a form ice dagon's dragon slaying magic" says Akira
"Well we have to find them and apologize for what we did" says Erza
In the forest
"Thank god you woke up i'm Akane your sister" says Akane
"What I don't have a sister and where am I" says Lucy
"Well I guess Layla erased half of your memory, give me your hand" says Akane
*Akane reaches out to her*
"What are you going to do?" says Lucy
"Just trust me" says Akane
*Lucy reaches out and grabs Akane and all these memories come back to her about Akane and her powers*
"OMG i'm a dragon slayer and i'm queen of the dragons" says Lucy
" I see your memory is back can you use your dragon slaying magic" says Akane
"I only know Celestial Dragon Roar and Celestial Dragon Iron Fist" says Lucy
"Do not worry I will help you learn the rest" says Akane
"There they are" says Natsu
"Get back Lucy" whispers Akane
"So back for another beating Natsu Dragneel" yells Akane
"No were here to apologize" says Natsu
"Sure you are you're just trying to butter me up so I would hand over Lucy" yells Akane
"No he right they came to apologize" says Akira
"They got you too Akira" says Akane
"Were all sorry" says Erza
"Please listen I deeply sorry for hurting her and deeply regret it so please come to Fairy Tail with me and I promise that I will become the next King and kick Zeref ass" Natsu says
"Akane?" asked Lucy
Akane looked at Lucy and saw that she forgave Natsu and look like she wanted to go
"Fine but you have do more then say you're going to be the next King you have to prove it" Akane says
"I'm all fired up" yelled Natsu
At Fairy Tail
"Lets gets you out of those dirty clothes" says Mira to Akane
Akane changes into Mira old clothes
(A.N the one from where Lucy turn invisible)
"It's kind of small but thank you" says Akane with a smile
"Sorry it's the only ones we had" says Mira
"Oh it's fine i'll just get a job to buy something to wear" says Akane
"That reminds me what color do you want your insignia and where do you want it" says Mira
"Can I have with two different colors?" asked Akane
"Sure" says Mira
"Yay then can I have it red with a blue border on my right arm?" says Akane
"Here you go" says Mira stamping the insignia on
"Thanks" says Akane
Akane go over to the job board and looks for a job
"Oh this one find and kill a monster should take 1 week I bet I can do it in 1 day 2 at the most and they pay is high about 200,000 jewels (2,000 us dollars)" says Akane raising the poster
"Mira i'm going to do this one" says Akane running toward Mira
"Huh this one was going to be on the s class wall but changed it" says Mira
"Cool the more I wanna go on it" says Akane
"Are you going with someone and this will take a week" says Mira
"I know i'm going alone and i'll be back in about 2 days max" says Akane
"Akane" says Mira worried