Heart of the Frozen Flame

I don't own any of the characters, or the language for the Dragon Words. I only own the Plot to this story.

"Natsu" – Speaking, Normal language

"Natsu" – Spells

"Natsu" – Memories

"Natsu" – Speaking, Draconic language

'Natsu' – Translation

'Natsu' – Thoughts/Telepathy

Chapter 3 – Knowledge

"Welcome back to the world, Primal Dragon Slayers, Wendy and Gajeel."

"Salamander, what'dya do to me? I feel heavier and rougher." Gajeel scowled, waiting for a reply.

"Your first element was Earth, and you turned said earth into iron. You've done this for so long that you couldn't remember how to turn yourself from iron into earth I guess. Try a roar, you'll be surprised."

Moments later, the clearing looked like there had just been a mudslide.

"Well I'll be damned…" Gajeel said, in awe of what he had just done and the fact that it felt at least three times stronger than his Iron dragons roar.

"Well, now that you can do that, I guess we should start on dragon words, as I can't teach you about your own element. Your Primal Grimoire will have all your spells you can learn, as well as useful Dragon Words. Just note that not every word will work with each other. Choose your word wisely, as you can only use one word until you cancel it." As he was talking, the fire around the Exceed dissipated, and the cats used their Aera to fly to their respective slayers, except Happy, as he launched himself at Natsu, landing right between his shoulder blades.

"Natsu! I thought the world was gonna end! Than- huh?" he paused as he saw a marking of a flame in-between his best friends shoulders that would have normally been hidden by his scarf.

"Hey Natsu, what's this?" Happy asked, referring to said mark.

"It's a Badge of Office, let's leave it at that. Although saying that, Wendy and Gajeel will have one too, as though just less… pronounced."

The other two were curious as to what he meant, and coerced him into explaining himself further.

"My mark is proof that I am of House Dragneel, all of the Slayers will have such a mark if they were raised by a dragon. It will be the mark the Slayer's mate will possess on their body to let other slayers know that the person is taken. Hopefully you both know that slayers take on the dragons mating habits, such as only being able to have one mate, regardless of if the other person loves them or not." Natsu paused so this information can sink in.

"Saying that, Levy should have hers fairly soon, eh Black Steel? It goes without saying, but if you hurt her, be prepared to feel a dragon's wrath. She's like family." Gajeel went red.

"You think I'd willingly hurt my own mate? That's low, Salamander. Even for you."

"Speaking of which, Natsu-nii, do you know who your mate is? Everyone is betting you'll be with Lucy by the end of the year, others are betting Lisanna or Mira, I even saw bets on Erza!" Wendy teased

"No, no, no, and hell no! Lucy is like a sister or even a daughter to me. There was a time I liked Lisanna, but I didn't want to start anything in case my inner dragon rejected her. The claiming of a mate process can have… dire effects of the person being rejected. Mira is nice and all, but Laxus has claimed her already, and Erza would try and kill me if I even brought up the idea." Natsu frowned. He'd met a lot of people and thought he had already met his mate, but nobody sprung to mind.

"Really Natsu-nii? You've not met your mate yet? I wonder if you ever will…" Wendy muttered.

"I guess this would be a great time to teach you a non-combat Dragon Word. It's sort of like Carla's premonitions, although it is forced, and has multiple rules you have to follow when using it, otherwise your mind could be ripped apart and you'll forget everything you've ever done." He paused to look at the faces of everyone. Carla had her eyebrows furrowed. "The word is Amativ Tiid Koraav, meaning Forward Time Sight, allowing you to see into the future. You need to have an idea of the topic you want to see in the first place, otherwise you'll just see a random future event. You also have to have a calm state of mind, and if you are interrupted you'll break the spell while incomplete. So, don't ever use it while there is a battle going on."

He waited for a minute to carry on, waiting for confirmation on whether or not these two would learn the word. "I'm going to demonstrate it here. Since we were on the topic of dragon mates, I'll see if I can see the face of my own mate, or at least something about them." Wendy nodded while Carla looked intrigued. She had never met another person who could see into the future.

Natsu got into a meditative stance and closed his eyes. The Primal Grimoire appeared in front of him again and sprung to life. It landed on a page that looked a lot like his mark on the base of his neck. Natsu shouted "Dovah Rot: Amativ Tiid Koraav" and his vision went black. As he did this, the space around Natsu went completely still. He thought about who his mate could be, and his vision turned scarlet, then white, then settled on a pink colour. He could see streaks of ice blue on the pink background. He then saw a face, who had bubblegum pink hair and icy blue eyes. She turned to look to someone, who looked very similar to how Gray described Ur.

His vision went black again, and he saw something he didn't expect to. An island, with a large tree in the middle. Two people from his past, and a dragon. He had recognised this place, it was where he and his brother met his now sister-in-law. He knew that he had a brother, who's personal history was steeped in horrific deeds. He knew his name too. He knew all about his curse, and his attempt to create demons to kill their master. However, all attempts but one failed. He created a demon based off Natsu, who got out of control and had to be sealed away by his foster father.

'I guess that's where we'll meet, but why on Tenrou?' Natsu thought to himself 'Unless we're meeting at the S class trials, there's no reason for her to be there…'

His vision went black once again, and as he was about to open his eyes, he saw her face again, but this time, it was slightly different. He saw her as if she was about to leave somewhere. She turned around, and walked into the distance, but not without displaying the crest on her cape. It was the stamp of Grimoire Heart.

His blood went cold, wondering why he was shown this girl, and this stamp. He opened his eyes to see Wendy right in his face, with a perplexed look on her face. It took a few seconds for her to register, but when she did realise she stumbled backwards and tripped over a root on the floor, landing on her backside.

"Ah! Natsu-nii… Sorry about getting right in your face, I was wondering why you weren't replying to us…"

"Salamander, didya know that we could see all that you could for those minutes? Who were they, and what was that place?"

"That, Gajeel, was tenrou island. The first girl I think is my mate, I don't know though. The black-haired girl looks a lot like what Gray used to describe his mentor as, and that place is where I think we'll be going for the S class trials…"

"Anyway, we should probably get some training done. I doubt that dragon was there for nothing!"

Wendy did a double take, remembering the black and blue dragon that showed up in Natsu's future sight spell.

"Wait, Natsu-nii, you're saying you're going to train us to kill a dragon? We've got about two weeks, what can you do that our dragons couldn't in all the time they spent with us?" Gajeel looked suspiciously at Natsu. "Well, salamander?"

"I've got a few tricks. Fortunately, we only need to work on the power behind your attacks, and the precision of said attacks. In these next two weeks, you will have complete mastery over your Dragon words, and your elemental form from said dragon words." He paused to look at the grins on the other slayers faces. "Depending on how quickly you master these, we could move onto dragon force, but I'd be learning along with you, as I've only ever done it twice… and that was with outside help. Once by eating Etherion, the other from eating Jellal's flame to take down Zero." Natsu grinned at the thought of learning to master Dragon Force and be able to use it at will.

-Time skip, Day of the 1st S class trial-

In the past two weeks, Natsu had taught the pair of newly crowned primal slayers. Gajeel had learnt how to turn his new Earthen form into an Iron form, as he preferred the feel of the element. Wendy had learnt how to become more self-confident, and had learned to gauge how much magic she is using for a single spell, and how to control said amount. None of them had been able to get control over Dragon force though, which disappointed Natsu as he wanted to learn how to the most.

Wendy also found out that her Air form allowed objects to pass through her without harming her like Natsu could do with his form, so she became one of the toughest sparring opponents either of the other slayers had to date. Nobody but the exceed and the slayers knew of this though.

Everyone was on the boat looking at Tenrou island, the place where someone was going to be crowned S rank.

"Do you all see the beach with the smoke coming off it?" Makarov started, causing all of the talk on the boat to stop "In a few minutes, the boat will stop. You'll have to head there for your first challenge. There are 8 routes available to you, one is a path that leads straight to passing. One leads to Erza, one to Mira, one to Gildarts. The other sets are battle routes… You'll find out what those are soon." He chuckled when he saw Natsu's eyes light up.

"Let the S class trial… START"