Erza and Natsu clashed with each other, the impact of their speed causing them to fall over backwards and roll down the hill that Natsu had not noticed was there before, rolling out of sight of the others, who had forgotten about their battle and watched the Demon Prince and Warrior Princess roll out of sight. And as if breaking from a spell cast on them they all shouted at the same time:

"Erza!"

"Natsu!"

"Don't get killed you little brat or Ze-Emperor Spriggan will torture me for years before killing me!"

Natsu had to chuckle at Acnologia's words despite the situation. Erza, seeing Natsu distracted, slashed at him with her flame sword, cutting him on the right side of his neck. If Natsu had been a regular human Erza would have cut his head off. It seemed that demon skin was tougher than human skin.

"OW! That hurt you bitch!" Natsu roared. Lucky he was still in his Etherious form, meaning that his nails were sharp, talons. Natsu slashed at Erza's face, slashing her on the bridge of her nose and on her right cheek, causing them to bleed.

The demon and human continued to roll across the ground, causing Erza's armour to crack in some places and Natsu's skin to scratch up when twigs pierced his skin each time he landed on some. Erza and Natsu both landed on their feet, crouching down to gain their balance, and stared at each other, Erza panting and Natsu looking as if he didn't break a sweat in the collision.

"I have to admit you're pretty strong," Natsu commented, placing his hand on the deep slash on his neck, spreading the reddish/blackish blood all over his hand. "Stronger than the other humans I've faught."

"Let me guess, you ripped them apart with your bare hands?" Erza asked, touching her hand to the slash on the bridge of her nose, assessing the damage done. When she felt wetness on the tip of her fingers she wiped the blood on her left cheek, making her look fiercer than before.

Natsu's eyes became cold as he started chuckling evilly, running his fingers over the small cuts over his body and spreading the red/black blood in his fingers' wake. He no longer looked fierce, naïve like before but sadistic, cold and cruel. This was the demon Natsu. This was E.N.D., the most feared demon in Earthland.

"I guess you can say that," Natsu says, lighting his hand with a demon flame and pressing it against the wound on his neck. The skin around it became black as if the fire burnt him, the wound closing up and leaving a ragged scar in its place. "Their skin was easy to cut through. My talons ripped through the human's skin as if I was ripping through silk, their screams and cries for mercy sounding like music to my ears."

"You really are a monster," Erza growled.

"Thank you, I'll take that as a compliment."

"I can not let something as vial as you walk among Earthland!" Erza shouted. "Re-Quip: Heaven Wheel's Armour!"

Erza Re-quipped into a new armour, one that really went with her name Warrior Princess. Plated armor covers her chest, with a large metal flower over it, and she wears a large billowing skirt that has metal plating in the upper area. Her stomach and neck are uncovered, and she has large metal wings that appear to be made of individual blades, as well as a wing-like headpiece. Natsu's eyes widen when he recognised the armour from the recurring dreams.

"No one," Erza says in a deadly voice, re-quipping two hundred swords behind her. "Ever brings harm to the earth! Dance my swords!"

The swords all shot towards Natsu, moving at the speed of light. Natsu crouched down and jumped up into the air, spreading his flame wings and sending a torrent of flames towards the swords. The flame pillar and swords connected in the middle of the field, causing the swords and flames to blend together and create a firework show in the sky.

However despite her swords being destroyed Erza came at Natsu fast, taking him by surprise and causing them to tumble towards the ground. A low snarl erupted from the bottom of Natsu's throat, making him sound like a wild beast. Natsu's limbs wrapped around Erza's body, the blade wings on Erza's armour cutting into his skin, and flipped them over so that when they crashed into the ground Erza was the one who took the most damage.

Erza coughed up blood from the impact of the fall, squirting some blood onto Natsu's cheek, who rubbed it off and licked the blood off his fingers.

"Who's going to be the winner of this little scuffle?" Natsu asked, leaning in towards Erza's face, his onyx eyes now blazing red like fire. "The demon or the human? I'm pretty sure I know the answer to that."

Natsu touched his talon-like nails to Erza's neck, pressing lightly so that a drop of blood poked out from around his nails, looking like a drop of ruby against Erza'a flawless skin. Natsu grinned, showing his lengthened fangs that were longer than they are in human form, and slowly drew his head closer to Erza's neck.

Suddenly their eyes connected, blazing red into chocolate brown. Natsu froze at Erza's expression directed at him.

Usually when Natsu was going in for the kill his victims were usually trembling in fear, tears flowing down their cheeks and their eyes filled with fear as they begged him for mercy, to spare them. Natsu usually reeled in a human's fear, enjoyed the moment where he was in control of the human's life. But as he stared at Erza, she was different. She wasn't trembling in fear, instead her body was stiff, as if she were waiting for death. Her cheeks were only wet with blood from the cut on her right cheek and when she had wiped the blood on her left cheek, and her eyes were fierce, determined, and glaring up at him.

No one has ever looked at him with such an expression before.

"What are you waiting for?" Erza snapped, her voice unwavering and as strong as before. "Kill me and be done with it."

Natsu pressed his nails into Erza's neck again, drawing more blood, but hesitated. He couldn't take his eyes off of Erza's face. For the first time someone wasn't fearing him ...

"What are you waiting for?! Do it already!" Erza snapped.

Erza's eyes widen in shock as Natsu shifted back into his human form, the black markings on his body shrinking so that they were only covering his arms. Black/red blood dripped onto Erza's face as Natsu's demon skin disappeared, the wounds opening up as he leaned towards her. Erza closed her eyes, waiting for the stinging pain on the side of her neck. She felt Natsu's hot breath ticking her face and knew it won't be long now -

- Natsu suddenly pressed his lips against hers, taking her by surprise. Erza's eyes flew open in shock, her mind not really contemplating what was happening. Because it couldn't be real, her eyes had to be playing tricks on her. But she knew it was happening.

Natsu Dragneel, E.N.D., Prince of Alvarez, the Demon Prince, was kissing her. And she, Erza Scarlet, Titania, Princess of Fairy Tail, the Warrior Princess, was kissing him back.

Erza cupped the back of Natsu's head and pressed him closer to her, kissing him back with as much passion as him. Natsu licked her bottom lip, asking for entrance, and Erza willingly opened her mouth, letting him explore her mouth. Erza shivered as Natsu's tongue sought hers and, as if their tongues had a mind of their own, they danced a passionate dance together.

I'm actually kissing the enemy, Erza realised as Natsu ran his hands through her scarlet hair. His fingers felt nice now, not the sharp stinging from before. I don't care either.

Erza's hands fumbled with the edge of the black vest Natsu was wearing, the Heaven Wheels Armour becoming to heavy and hot against her skin. The clothes were beginning to become a problem.

Natsu pulled away from her, a trail of saliva connecting their mouths, and he took the vest off so that he was only wearing the white scaley scarf, a waist coat that matched the vest and white trousers, and leaned back towards Erza and started kissing her again. Erza ran her hands over Natsu's well-formed muscles, loving the feel of them under her hands before running her hands through his surprisingly soft spiky salmon hair.

"Captain Erza!"

Natsu and Erza quickly pulled apart from each other, panting heavily as the sound of boots stomping on the ground came towards them. Erza and Natsu jumped to their feet as the soldiers from the second magic warfare unit ran down the hill, holding their magic spears in their hands. Gray was with them, heavily bruised. He had somehow lost his pants before and was only in his boxers.

"Are you OK Captain Erza?" the soldiers ask in unison.

"Don't worry, I'm OK men," Erza says, re-quipping back into her captain uniform.

"Where's the Demon Prince?" Gray asked, running towards her. Erza turned her head and realised that Natsu was gone. Only his black vest was left.

"He's gone," Erza later said, turning back to her brother and men. "I don't know where he went and I don't care."

"Captain Erza, do you mind if we ask who won?" a soldier asked shyly, gripping his spear tightly as if Natsu would jump out at him.

"I don't know exactly," Erza answered. "I say it's a draw."

The second magic warfar unit soldiers nodded and turned away, seeing that their captain was alright they left. Gray stared at Erza in suspicion for a while before turning away.

"Gray," Erza called.

Gray stopped and turned to give her a questioning look. Erza nodded at him and said, "find your clothes and try to keep them on." Gray stared at her in confusion before looking down, jumping back in surprise when he noticed he had unconsiously stripped, again.

"Shit, when did that happen," he muttered as he turned and ran to catch up with the soldiers, trying to find where he had thrown his clothes. Erza turned back to the vest lying on the ground and picked it up, holding it to her nose and sniffing it. Cinnamon and campire fire. Natsu.

Erza slid the vest on over her breast plate halter top and touched her finger to her lips where she could still feel Natsu's lips on hers.

"Erza?" Gray asked, coming back up to the top of the hill, pulling on his white jacket.

"Don't worry, I'm coming Gray," Erza says, walking passed him. Gray eyes the vest, wracking his brain on where he had seen the vest before. Coming up blank he shrugged and followed Erza, unconsciously taking the white jacket off and throwing it away.

"Oh shit," Acnologia mumbled as the Flying Dragon Squad walked up the path towards the castle in Alvarez. "We didn't kill Princess Erza. Ze - Spriggan is going to kill us."

"I'm not worried," Natsu yawned, scratching the ragged scar Erza had given him under his scarf. "Zeref-Nii would just kill you. He went through hell and back to revive me, he won't kill me."

"It's not you I'm worried about," Acnologia muttered.

"Welcome back," Invel says, bowing.

"Hey Intel," Natsu says. "I'm hungry. Can you make me some food?"

"My name is Invel and I'm not a chef your highness," Invel says, frowning. Natsu's eyes blazed red and Invel quickly made his way to the kitchen.

"That wasn't really nice Natsu-San," Wendy sighs. Natsu shrugged.

"It works all the time," he answers carefree.

They walked into the thrown room where Zeref was sitting on his throne, looking bored. Natsu walked up to the slightly smaller throne beside his and collapsed onto it, sighing.

"It's so good to be on the ground," Natsu sighed. "Riding on Acknowledger's back was making me motion sick."

"My name's Acnologia you brat," Acnologia growled. "AND I AM NOT TRANSPORTATION!"

"I see you as transportation so you make me motion sick."

"How's that even possible anyway?" Acnologia shouted. "I turn into a dragon! Dragon Slayers don't get motion sick on a dragon or when an Exceed is carrying them!"

"You're not a true dragon."

"I'M GOING TO KILL YOU!"

"Acnologia," Zeref says, his voice deadly calm as a dark aura surrounded him. "I do not take lightly to people threatening my little brother. I wasn't planing on giving you a harsh punishment but since you did threaten Natsu I'll give you one of my most sever punishments."

"NOOOOOO!"

Natsu stuck his tongue out at Acnologia teasingly but when Zeref turned his gaze to him he froze.

"And Natsu, for failing to kill the princess I'll give you a punishment too," he says, giving Natsu one of his evil but playful smirks. "You'll spend three hours in your book form in a bookshelf in the library."

"Pfft, I can handle that."

"In the maths section."

"NOOOOO!"

If you want to see Zeref's punishment for Acnologia I'm sorry but I'm not creative enough to think one up. If you want to give me some ideas put them in the comments. They can be violent but not too violent that the rating would be M. Also there would be a lot of sexual themes in this but it won't go to M.