Notes: I've seen so many fics of E.N.D! Natsu x Lucy that I decided to make an E.N.D!Natsu x Erza instead. Natsu still has the same personality in this as the original (destructive).

Fiore was burning.

The once beautiful landscape of the Kingdom of Fiore was lit up with orange, red, black and blue flames, the lands completely engulfed in the orNange and red flames of nature and the blue and black demon flames. The once lush, green grass was now blacken and burnt to a crisp, the plains across the land completely burnt out. The tall, beautiful trees were ashen and dead, no longer holding the life that it used to reel in. There was simply nothing left.

"How can this happen!?" Princess Erza of Fiore screams to the sky, falling to her knees, her Heaven's Wheel Armor clanking with her movements. Her long scarlet hair was plastered to her forehead with sweat and ruby blood, her usually flawless skin was scratched and bloody, bruises and cuts lined her body and her Heaven Wheearmor was cracked in some places, displaying the Titania's weakness to the world. She had fought her best for her Kingdom, but her magic power was out.

She has nothing.

"This is my fault," Erza cried out, grabbing her head and weeping for her Kingdom, for her parents. For herself.

"Erza."

Erza looks up to see a silhouette coming out of the flames, walking towards her. Behind the flames she could make out a pair of horns protruding from the top of the figure's head, wings taking shape from behind the person and a scarf flapping in the wind from the person's neck. The fire seemed to shift and shrink around the figure, drawing towards it as if he was calling the flames to him, natural and demon flames together. Finally, when the flames were gone, leaving nothing but burnt land, the figure was now clear: he was a well-built young man with spiky pink hair with two yellow horns, a well-toned body with a pair of wings that seemed to be made out of fire and eyes the colour of fire along with black markings all over his body in the shape of flames.

He was the Flame Demon, also known as E.N.D. or the Demon Prince, who was in his Etherious Form at the moment.

At the sight of the Flame Demon Erza's tears fell harder, blurring her vision. Erza struggled to get to her feet, a sharp pain shooting up her leg but she ignored it. Erza stumbled forward towards E.N.D, her legs giving out and causing her to stumble right into E.N.D.'s arms, who held her to him protectively as she cried on his shoulder.

"Everything's gone!" Erza cried, her voice muffled by sobs. "Fiore is gone. There's nothing here, my people are dead, burnt. I'm the only one left."

"Ssh ... Erza," E.N.D. soothed, stroking her scarlet hair as he buried his nose in it. "It's alright. I'm here, everything'll be OK."

"No, it's not going to be OK!" Erza yelled, pulling herself away from E.N.D.'s chest and looking up at him with tear-stained brown eyes. "Fiore being like this, being burnt to nothing, is our fault! The Demon Prince and Warrior Princess together, that would surely make things worse! And now -"

Erza couldn't finish, instead breaking down in tears, falling to her knees and clutching E.N.D. around the legs. E.N.D. crouched down and wrapped his arms around Erza's head, stroking her back.

"Erza, come with me," E.N.D. whispered into her ear, his breath sending chills down Erza's spine. "Become a demon. Become the Demon Princess to my Demon Prince."

E.N.D. took Erza's face in his hands and shifted so that his face was in front of hers. His form shifted, the horns shrinking back into his skull, the flame wings snuffing out and the black flame markings fading so that he looked human. The only thing that made him look like a demon still were the sharp canines, the one thing that marked him as a demon in his human form.

Erza closed her eyes, sniffling and resting her head against E.N.D.'s chest. E.N.D.'s gentle stroking on her back calmed her, sending delicious tingles through her body. Finally, after making up her mind, Erza looked up at E.N.D., wiping her cheeks and nodding.

"OK. I'll become like you," Erza whispered. E.N.D. placed his hands on Erza's shoulders, Erza flinging her scarlet hair off her shoulder and tilting her head to the side, exposing the side of her neck to E.N.D., who leaned towards her, fangs exposed. Erza shivered when she felt the tips of E.N.D.'s teeth against her neck, and -

Erza awoke with a start, rearing up in her bed and breathing hard. She ran her hands through her sweat-drenched hair, trying to catch her breath as her eyes adjusted to the light of the sun that was only beginning to set over the mountains.

Ever since Fairy Tail Kingdom had waged war over the Alvarez Empire after the Emperor Spriggan had attempted to kill the King of Fairy Tail, Makarov, Erza had been having these strange dreams where Fairy Tail Kingdom was burning and Erza had agreed to become the Demon Princess to the Demon Prince E.N.D.

Erza had heard of E.N.D. He was the younger brother of the Emperor of Alvarez, rumoured to being a ressurected demon that the Black Wizard Zeref had created from his younger brother's dead body. How he ended up in Alveraz was a mystery to everyone in Fairy Tail Kingdom.

"Princess Erza?" a knock sounds on the door and the door creaks open and a white head pokes through.

"Hey Mira," Erza sighs, fisting the sheets and closing her eyes. Mirajane sighed, sliding her hand up the door and resting against it as she surveyed Erza.

Once upon a time, after Mirajane's parents had been killed and when Mirajane was new to the Fairy Tail Kingdom, when she had been known as the 'She Devil' and before her sister Lisanna's death, Erza and Mirajane had not gotten along. At all.

But now they were best friends, nothing being able to separate them.

"I'll go and take a bath now Mira," Erza sighs, swinging her legs over the side of her bed and standing up. The ghost of the pain in her leg still remained but she tried and ignored it as she made her way to the bathroom. Erza was surprised to find the tub already filled with steaming water. It was even filled with bubbles.

Erza stripped from her nightgown and stepped into the tub, the water relaxing her aching muscles as she sunk into the water, the bubbles tickling her skin as she sunk in chin-deep.

The recurring dreams, she didn't understand them. Why would she, Princess Erza of Fairy Tail Kingdom, nicknamed Titania and Warrior Princess, captain of Fairy Tail's Second Magic Walfare Unit, dreaming of the Demon Prince E.N.D. as if he were her lover? She couldn't except the fact that the infamous Demon Prince was appearing in her dreams.

Erza sighed once again before completely submerging completely into the bubbly water, the outside world disappearing with her worries.

He didn't exactly know when people started calling him E.N.D. or the Demon Prince. His name was Etherious Natsu Dragneel, or just simply Natsu as he preferred to be called. Maybe people were to lazy to call him by his full name and abbreviated it to E.N.D., which was a much better name for a fearful demon than Natsu was. Well, that's what Acnologia, his brother's right-hand man, says anyway.

"Hey, you little brat, what're you doing in here?" a slurry voice asks. Natsu turned around to see said right-hand man stumbling into the attic room Natsu was standing in, a bottle of beer in his hand. Great, Acnologia was already drunk. Natsu didn't understand how he was nicknamed the Dragon of the Apocalypse or how he was his brother's right-hand man if he couldn't keep off the liquor.

"Staying as far away from you as I could possibly get," Natsu answered, turning away from the dragon in human form. "What are you doing in here Acknowledger?"

Acnologia's eye twitched at Natsu's nickname for him but didn't say anything. Instead he took another swig of beer and swayed on the spot.

"Ze-Ze-ref - oops, I mean Emperor Spriggan or whatever his fake name is these days - says he wants you in the throne room right now," Acnologia slurs, pointing a finger at Natsu and almost falling over backwards. Natsu rolled his eyes at the drunk Dragon Slayer.

"Alright, I'm coming," Natsu says, going to walk passed Acnologia. Instead he turned to the swaying man and punched him in the gut, knocking him out instantly and rested him against the wall. "Believe me your head will be much worse than your gut tomorrow."

Five minutes later Natsu was entering the throne room where his brother Zeref was standing by the window, the white toga flowing in the wind that was blowing through the open window.

"Where's Acnologia?" Zeref asked, not turning around.

"Acknowledger is passed out against the wall in the attic," Natsu answered, changing into his Etherious Form and flying to the highest window and perching on the windowsill, transforming back into his human form. "He had way too much to drink before."

Zeref shook his head. "I swear that man is going to be the end of me some day."

"No, I will be since I'm the only one who can actually kill you," Natsu pointed out. It wasn't a joke either. Zeref didn't laugh either. "Anyway, what is it you want to talk about?"

"I decided to send some people to Fairy Tail Kingdom as spies," Zeref explained. "But I can't send the Spriggan Twelve because I need them here."

"So, who're you going to send instead?" Natsu asked.

"The Flying Dragon Squad," Zeref says. "I need you to do a special thing for me, too. Only you can do this Natsu."

"What's that?" Natsu asked, his interest perked.

"Kill Princess Erza Scarlet of Fairy Tail Kingdom."