Title: The Keeper of Eidolons

Genre: Drama, family and angst

Summary:

Ferah Lucis Caelum is the fourth keyblader. She set out her journey to reclaim the seven Eidolons that scattered across the world. The princess of Caelum, twin sister to Noctis, learnt Ardyn had lived in the lanes in between and will do everything to open Kingdom Hearts once more. Her destiny is much wider than she had anticipated.

A/N: Okay, I never played Final Fantasy XV and this will be AU and huge spoiler.

Ferah Lucis Caelum is my OC character creation. She doesn't exist in the game. Fair warning, the storyline for Noctis contained a huge spoiler and if you're desperate to play, feel free to skip chapter one. I want to see how this project turn out because I favour this idea a lot. The name 'Ferah' actually means fire and her name was somebody I created since I first began writing. The very first OC character I created.

I welcome all constructive criticism and please let me know, for a person who never play the series, give feedback.

The Kingdom of Lucis

Chapter One

"Noctis!"

The prince of Caelum struck his sword to the ground. Thin blue streams rose into the air. It flowed to the woman who called out to the swordsman. He understood her protest. She was horrified at his sacrifice against the creatures of Daemon and he had used his power to entombed her to a flower of crystal.

A bright light flashed before her eyes and her heart ached with grief. Face flat down in a peaceful garden filled with a familiar flower, thin light blue streams circled him and her twin brother crouched down. Noctis was in his same outfit.

This time without his beard. He wore a black suite collar coat and had black bangs at the front of his hair. His hair was spiky at the back. His relative looked imploringly at him. Tears welled up in her blue eyes. The same colour she shared with him.

"You know why I have to do this. I know you're afraid to be alone." Noctis held onto her hand to console her. The other rested on her head.

She sat upright and threw her arms around him. The sister hugged him tightly. Noctis felt her shook vigorously and still, he settled his hand on the back of her hair. Plus, on the back of her shoulder.

"There's got to be another way to save the kingdom." She cling onto his shirt. "Why must I live and you don't?" Her voice wobbled and muffled against his shirt.

Noctis sighed. The twins grew closer since their father passed away and was murdered by Ardyn. They were sent away. Noctis was a success. Ferah, wasn't a success as she was cursed and locked in an eternal slumber. "I want to give you a chance, Ferah. You deserve better."

Ferah knew what he meant. "We don't know who'd cursed me when I was born. It might not be Ardyn."

"I don't care!" Noctis looked annoyed. He looked almost angry. "Ferah, you're so naive. You went all crazy at Prompto, then at Ignis and even Gladious! He's like a second father to us and is our advisor our dad had assigned him to us. Sometimes you embarressed me. Sometimes I don't even know you!"

"You loved me enough to punch the poor boy who fooled me enough to kiss me. I'm sorry I got you into a brawl fight and suspended." Ferah admitted. She never apologised to him and finally understood why he was so agitated every time she was around boys.

"It was worth it." Noctis shrugged his shoulder. He looked amused and brushed off her apology. "Your apology is not going to change my mind."

"What am I going to do when I wake up?" Ferah brought them back to reality. "The world we know is gone. There is not even a droplet of light. All is shrouded with darkness and the creatures of daemons."

"Ferah," Noctis lifted her chin gently with his black glove hand. "You won't be alone. So long I am in a realm of dreams. I will be there to pull you out. That is why I need to fulfil my prophecy. You must live and you are the way that will restore the light to balance. You are the keeper of Eidolons. That is why you must live."

"You promise?" She hugged him tighter.

"I promise." Noctis kissed her on her cheek and smooth her back. Then, ruffled her hair. "Oh, just because I'm not around you doesn't mean you can lock lips with other boys." Noctis warned her sternly. "Don't use Luna to distract me either."

Noctis pulled her up with his hand. The twins stare at each other for awhile. The sister could see him fade and more thin blue streams circled him and more spiralled away. She understood him and knew who Lunafreya was to him. His childhood sweetheart and his bride.

"I love you, Ferah, always will. Remember I will live in your heart and if you are ever to be thrown to the darkness, I am your way home." Noctis vowed seriously.

Ferah nodded. She watched him part and as soon as she close her eyes, she saw from a distance her brother was wore the ring of Lucii. His sword still on the ground. The true heir stood by his throne. He closed his eyes and gripped the ring tightly in his hand. The creatures of daemons surrounded him.

A strong fist will strike once at him. Then, the other from behind at his back. Noctis fell onto his knees. The ring of Lucii began to brightened with the same light Ferah had encountered since her childhood. She flinched at the sight of his pool of blood that coated the concrete ground.

Blood spilled from his mouth. More hits that strike in various parts of his body and he gasped, struggled to hold his last breathe. The light grew brighter and brighter. The ground trembled violently. Noctis, becomes whiter in white streams that now circled. The streams of thin light was no longer blue. Instead, now white.

Noctis yelled in sheer agony. The white light that circled flashed like an explosion and the moment it shot in the air, it expanded like an oval shape. The true king of Lucis vanished and the white light now went over to the creature of daemons. It burned like a hot fire. The creatures that was the only being left in the world of Eos vanquished for good.

- Kingdom Hearts -

The crystal flower slowly evaporated with a stream of blue light. It slowly melted away into a forest leaves. The princess gracefully landed on her feet to find the kingdom of Lucis was now alight with the sun.

Upon the sky is now filled with a crowd of clouds bundled like a pillow. The air that felt so cold in the past now warmth the world. A clean air waft through the sister. She looked around the castle and noticed she was still in the middle of the room. Her heart leapt with joy at the sight of her brother walked towards her.

He was the same as she had remembered. Black hair bangs at the front. Spiky hair that was stubborn to flatten down at the back of his hair. His black collar suite and glove hand were the same. The beard she had seen was no more. He was in his youth as she remembered. Ferah greeted him with a smile on her face. But, the closer Noctis reached her, she noticed he was in spirit.

He finally reached her. The king raise his hand and a keyblade appeared in the air. The older brother nodded to her. His sibling looked questioningly at the sight of his request.

"Keyblade?"

"Ardyn had reached far beyond than we expected." Noctis explained. "He won't hesitate and locked you in the realm of dreams. The chancellor had already disturbed the Lifestream. Luna told me even the dead aren't ready to be granted the eternity slumber unless he is stopped."

"He was stopped. You sacrifice yourself for the kingdom of Lucis." Ferah reminded him.

"I know." Noctis looked troubled. "I contacted Luna and discovered her wounds did not heal. I sent her to Radiant Garden and I met Ardyn. He told me he was only alive because he had waited to meet me on the other side. Yes, he spoke about the other side when I challenged him."

"Ardyn. The chancellor. I thought he was the one who'd cursed me in the realm of dreams." Ferah pointed out.

"He did. He didn't just manifest humans to daemons and shrouded the kingdom of Lucis with darkness. Ardyn allowed me to kill him so he can lived in the realms of lanes that leaded to other worlds. He sent you to the realm of dreams so I couldn't reach you."

"So, all that time, when I was in a dream in the same dimension, that was him." Ferah gaped at him. "I could hear you trying to wake me up and the Eidolons I summoned didn't heed me."

"He controlled them, and now, he lived in the realm of lanes, I am the reason the people of Lucis could not rest. It wasn't just Luna. I met a woman name Aerith Gainsborough. She told me when I defeated him he had travelled through the Lifestream and awoke somebody far worse than him." Noctis revealed.

He nodded once more to the keyblade. Ferah accepted the weapon. It glowered. She watched him undo a pendent. The pendent looked like a crystal flower and he place it in his hand. The twin sister knew the pendent belong to him and it was a royal traditional gift to the first heir in line. The pendent was a magical item that protects the owner from being manifest into any monsters such as the daemons that lived in the world of Eos.

"Noctis, it feels wrong to accept this. You're the rightful heir and the first in line." Ferah protested and sounded most unwilling.

"This was meant to be given to you since you were stolen away from the family of Caelum." Noctis explained. "Dad asked me to before he passed and said the ring of Lucii was enough for me to be protected. Believe me, you need this more than I do and Ardyn will keep sending you to the realm of dreams. This pendent won't do me good now that I'm dead."

He helped her equipped the pendent around her neck and kissed her on the cheek. Ferah nodded reluctantly.

"Where can I start?" Ferah asked curiously. She was determined now.

"Palumpolum. Aerith said, find the Moogle in the shop and it will open the lanes in between. A different path. The Moogle's name is Sapphire." Noctis provided.

"I love you, Noctis, always will." Ferah said sincerely. "Give my regards to Luna. I'm sure I will see her again."

Noctis return his gesture and smiled. "Take care, sis. I meant what I said to you earlier. Don't get too comfortable when I'm not around. If you ever get thrown into the realms of dreams, I will be there to pull you out should Ardyn send you to the realm of dreams."

Noctis summon his sword and struck it to the ground. A stream of blue strings rose into the air and he raise his hands to allow the blue orbs that circled to her. Ferah closed her eyes and allowed the orbs of strings to flow through her. It flurried through. The king of Caelum picked up his sword. Three times, he swirled his weapon around and with a final swing, he sent a thin blue light that struck an accurate hit against the orb.

His sister vaporise with the orb he had conjured. Soon after, the rightful heir disappeared not long after Ferah Caelum had done and that moment on, it is when her true destiny begins at the town of Palumpolum as a keyblade warrior.

- Kingdom Hearts -