Natsu was once again slumped over the bar at the guild, tossing back drink after drink. It had become a bad habit lately as a means of coping with his inexplicable heat which was still burning as strong as ever. Sex wasn't even GOOD anymore. Well, that's a lie, it was always good, but it was starting to feel different somehow... Almost hollow, as if he was missing something special.

'Hey Natsu,' said Cana, who was sitting nearby, 'Rough day?'

'The usual,' Natsu responded as he skulled the last of his drink.

'Oh, are you still having problems?' she asked teasingly.

'Tch, how do you know?' Natsu snapped, sick of being asked that question or ones similar.

She laughed, clearly somewhat intoxicated, 'You've had sex with like half the guild, how could I NOT know?'

Natsu feigned offense, 'Are you calling me a slut?'

'Maybe,' she moved a little closer as she spoke, alcohol on her breath, 'But you haven't had sex with me.'

The fire wizard eyed the card wizard up and down and said, 'Nor will I.'

Cana looked grumpy, 'Why not!?'

'You're not my type,' he shrugged.

She snorted, 'I wasn't under the impression you HAD a type!'

Natsu didn't respond so she moved even closer still and continued to nag him, 'C'mon, what's wrong with me?'

'You're annoying,' he retorted bluntly.

The drunk woman was silent for a moment and then started giggling, 'Oh, Natsu! You're so funny!'

Natsu rolled his eyes.

Eventually, Cana gave up and changed the subject, 'My dad's coming back tonight. I'm so excited to see him!'

'Gildarts?' the pink-haired man sat up, suddenly interested in what the brunette had to say.

'Duh, Gildarts! Who else?' her face was flushed pink, either from intoxication or from thinking about her long-lost father.

Natsu didn't answer her question, instead he jumped up and headed straight to the door. He planned to sneak into Gildarts' apartment before he got there and surprise attack him. The older man had gotten the better of him many times before, but THIS time Natsu was going to come out on top.

Gildarts opened the door to his apartment and went inside, exhausted from the month-long mission he just finished. Before he could even take off his coat, he saw a blur of pink and a flash of red flames as the young dragon charged at him. He was too slow however and the most powerful mage in Fairy Tail easily defended against the attack, knocking Natsu down with one strike.

He loomed over the dizzy boy and laughed, 'Geez, Natsu! When are you going to learn?'

'Dammit...' the salamander cringed in pain, 'I thought I had you this time!'

'Not even close,' the larger man chuckled again while discarding his coat.

'Get up, kid,' he ordered, giving Natsu a gentle kick before sitting down on a nearby chair, 'I wanna talk to you.'

The fire mage clambered to his feet and sat down opposite his mentor, 'What's up, Old Man?'

'I was just at the guild,' he explained, 'And heard you've been causing quite a bit of trouble.'

The pink-haired boy sneered his fangs, 'Yeah, and what's it to you?'

Gildarts smirked, 'Well, you know what they say; what goes around, comes around,' he stood up suddenly and towered over Natsu threateningly, 'And as the closest thing you have to a father, it's my job to discipline you!'

He stared up with a blank look on his face, momentarily unsure of what the older man meant. When he started palming his groin through his trousers, the trouble-making dragon figured it out and smiled.

'I wouldn't be smiling if I were you,' Gildarts taunted him, 'You may think you're hot shit playing with pretty young boys and girls in Fairy Tail, but you're about to experience what it's like to be with a REAL man!'

Bring it on, Natsu thought. Cana may not have been his type, but her father certainly was. Not that he had ever thought of his mentor in that way before, but he was starting to see the sexy mature man in a very different light. He was tall, muscular, handsome in a gruff kind of way and his masculine musk was overwhelming.

Gildarts unzipped his fly and dropped his pants, revealing his large package bursting out of a pair of tight black briefs, and ordered, 'Come give Daddy a kiss.'

Obediently, Natsu crawled over to the older man and buried his face in his crotch, getting a strong waft of his invigorating scent which made the lustful dragon get hard instantly. He pressed his lips against the the thick outline of Gildarts' shaft through the fabric and groaned into it as he kissed it. He then started lapping at it hungrily.

'Do you want Daddy's dirty cock, bitch?' the auburn-haired man asked.

Natsu whined and nodded, 'Yes...'

'Yes, Daddy,' Gildarts corrected him, dead serious.

'Yes, Daddy...' the dragon slayer repeated, having to gold back his laughter..

'Go on then,' the older man said, as if giving permission to a dog to eat his dinner.

Natsu stripped the dominant wizard of his pants and underwear, exposing his monstrous 9 inch cock and a large low-hanging ballsack. He had a thick nest of copper pubic hair covering his genitals. The lizard licked his lips and then got to work, running his tongue up and down the sides of the enormous shaft and suckling on the big balls.

Gildarts' meat was so thick, Natsu wondered if he would be able to fit it all in his mouth, but he was determined to try his best. He opened wide and took the bulbous head in, sucking on it gently while slithering his tongue around it. He pushed further down and started swallowing the lethal weapon. He got it past halfway before he started to choke, gagging at the intrusion and spitting up saliva as he struggled to breath.

The disassembly mage laughed and ran his hand through the boy's fluffy pink hair, 'Yeah, choke on that dick, bitch. Bury your nose in my pubes.'

Natsu tried to relax as he continued to swallow the massive cock, forcing it down his throat. After some strangled cries, he managed to get it all the way in so that his nose was right inside the orange pubic hair, just like he had been told. He could smell Gildarts' powerful musk coming from his bush and it made him even hornier. The large, dangling balls banged against his chin as the towering man thrust his hips back and forth, fucking Natsu's throat like a fucktoy.

He pulled out when he was about to cum, allowing Natsu to gasp desperately for air, instead choosing to jack himself off to completion. He shot his thick, pasty load all over Natsu's face and hair, drowning the younger man in his seed. Natsu licked up as much as he could, savouring the potent flavour on his tongue and lips.

'Not bad, bitch,' Gildarts commended his student, 'But that was just the entree. What do you want for round 2?'

The salamander blushed as pink as his hair as he spoke, 'I want to eat your dirty ass, Daddy.'

'Mm... Naughty boy,' the older man licked his lips, clearly liking the sound of that, 'Let's move to the bed first - and take your clothes off, a slut like you has no need for them.'

Natsu did as he was told, removing his clothes so that he was completely nude and then following his father figure to his bedroom. He lay down in the middle of the large bed and waited for further instructions.

'Actually, I changed my mind,' said Gildarts, rummaging through an old cardboard box and pulling out a tiny piece of pink fabric, 'I want you to wear these.'

He threw the woman's slutty g-string to Natsu who quickly slid it on, over his muscular legs and around his slender hips. The skimpy underwear was tight, rode up his asscrack and completely failed to contain his bursting balls and throbbing erection. He felt humiliated wearing them, but the wild look of lust in Gildarts' eyes when he saw made it well worth it.

The S-class mage climbed onto the bed and stood over Natsu, 'Fair warning, bitch, I haven't washed properly in a whole month!' he cackled before sitting straight down on the youth's face.

He wasn't kidding, Natsu noted as he was smothered by the large, fleshy ass. A ripe musk hit him immediately and the horny dragon inhaled it deeply, filling his head with the smell. He opened his mouth and lapped at the hairy crack before him which was sweaty and dirty. He burrowed his way in to the puckered hole, snaking his tongue into the tunnel and whisking it about wildly.

'Fuck yeah, eat that ass!' Gildarts cheered, enjoying the attention on his sensitive hole, 'Choke on my farts, bitch!'

With that, he let rip a series of obnoxious farts into Natsu's face, making the poor gag and wretch from the foul smell. Despite the suffocating gas, he continued to work his tongue in and out of the sloppy hole, determined not to let the destruction mage break him. He felt dizzy and was achingly hard, overwhelmed by lust and desire.

'If I didn't know better, I'd say you were enjoying this you filthy bitch,' Gildarts removed his smothering ass and added, 'Perhaps I should punish you in a different way.'

He got up and took hold of Natsu by his ankles, pulling him down to the end of the bed and bending him over the edge so that his ass was sticking out. He ran a rough, calloused hand over the slutty pink panties and then pulled them down slightly so that they say just below his round bubble butt. He spanked the bare ass hard a couple of times, making the fire dragon yelp in surprise.

The abusive man moved away and rummaged through the messy piles of junk in his room, re-emerging with a long, thick cane, 'Back in my day, this is how we punished naughty boys and girls,' he said, gently rubbing the end of the weapon against Natsu's rear end, 'You've been a naughty boy, haven't you?'

'Yes, Daddy,' the pink-haired boy whined.

Gildarts cracked the cane hard against one of Natsu's checks, leaving behind a scarlet stain on the fleshy globe, 'Or should I say, "you've been a naughty girl, haven't you?"'

'Yes, Daddy,' the disgraced Dragon Slayer whined again.

Gildarts lashed him again, this time hitting across the back of his thighs and making him howl in pain, 'Beg me to stop!'

But Natsu said nothing, so Gildarts whipped him again, 'I said beg, bitch!'

'Please!' the young man pleaded as his ass, thighs and lower back were pelted over and over again by the cane.

'Please what?' asked the sadistic older man as he tortured his victim.

'Please... Please stop...' Natsu cried between more vicious whippings, pain searing all over his battered body, 'Please stop, Daddy...'

'Very well,' Gildarts said, dropping the cane after one last smack, 'I'll give your slutty ass a different kind of beating.'

He moved closer to the smaller man and kneaded the bruised globes in his strong hands. Natsu hissed at the pain and tried to prepare himself for what was to come. Gildarts pushed the head of his enormous cock against Natsu's tight entrance and shoved it in, eliciting a murmured moan from the pink-haired wizard. He sheathed his sword fully inside the hot cavern and slammed it back and forth, not holding back with his powerful thrusts.

The salamander groaned as he was filled and stretched apart. After taking so many large cocks - real or otherwise - up his ass over the last few weeks, he thought he would be used to the feeling by now, but it still felt like he was having his insides ripped open by the mighty penis.

'Turn over,' Gildarts ordered as he pulled out and flipped Natsu over onto his back, 'I want to see you moan while I breed your ass.'

But before he did that, he pulled a silver cockring out of god-knows-where and slid it over Natsu's shaft and pulls, preventing him from cumming. Once that was in place, he plunged back into the now-gaping asshole. He thrust in and out of the tight channel while stroking Natsu's weeping cock vigorously. The fire lizard growled in frustration as tension flared in his balls that were bound by the cockring.

'Fuck yeah,' Gildarts hummed, feeling his climax drawing near, 'Do you like Daddy's cock in your asshole?'

'Yes, Daddy, it feels so good,' Natsu whimpered, overwhelmed with pleasure from the dick in his ass and the hand around his own throbbing member.

'I'm gonna cum!' the older man declared with a roar and shot torrent after torrent of seed into the dragon's tunnel.

He pulled out, cum still spitting out of his cock and sighed heavily, 'I think that's enough for today.'

'But...' Natsu muttered, glancing down at his swollen cock.

Gildarts cackled and ignored him. He rummaged through the piles of junk in his bedroom and returned with a pair of handcuffs, a ball-gag and a large vibrating dildo. Natsu whined when he saw the items and tried to get away, but the larger man stopped him and threw him back down against the bed. He cuffed the boy's hands behind his back and the fire wizard immediately tried to break them with his magic.

'No good, those cuffs are resistant to even the most powerful spells.'

Natsu growled before having the ball-gag shoved into his mouth to muffle his sounds. Then the destructive-looking dildo was inserted into his loosened rectum and turned on. A buzzing sensation washed over him as the toy sent vibrations through his entire body.

'If you behave yourself, I'll let you go in the morning,' Gildarts patted the pink-haired boy on the head like a dog, 'but if you try ANYTHING, I'll make you my personal toilet for a whole year!'

With that, he picked Natsu up and moved him to the spare room. Then he returned to his own room for the rest of the night. Feeling adequately threatened, Natsu didn't dare move an inch as he lay on the spare bed, gagged, bound and penetrated. His cock was already aching desperately and he couldn't touch it at all so he knew he was going to be in for a long night.

He didn't get a wink of sleep as he lay on the bed all night, wriggling around shamelessly as he was fucked by the vibrator. Any pleasure he may have felt was completely forgotten after a couple of hours and all he could feel was the painful sensation in his balls which were about to burst from lack of release. His mind raced, thinking about various people (Gray, Erza, Lucy) and having sex with them, which didn't help at all. Tears fell down the sides of his face as he cried into the gag in his mouth. He lost count of the amount of times he thought about trying to run away, but he knew his punishment would be even more severe and decided to stay put every time.

Finally, after what seemed like an eternity or two, Gildarts returned in the morning. He seemed surprised to see Natsu was still there, but pleasantly so, and he smiled at the tortured young boy with admiration.

'Very good, bitch, I didn't think you had it in you,' he sat down on the bed next to Natsu and petted his naked body.

The dragon whimpered at the touch and begged the older man with his eyes to let him go.

'Okay, okay,' the older man sighed, 'A promise is a promise.'

He removed the trap around Natsu's cock and balls and took the shaft into his mouth to suck on it. Within seconds, it spasmed and exploded, pouring torrent after torrent of hot cum into the ginger man's mouth. He drank it all down with glee and then removed the gag, cuffs and vibrator, freeing the dragon from all his constraints.

'You're free to go,' he told the youth.

'Thank you Daddy,' Natsu's voice was sweet, but his mind was plotting something sinister.

He got up to leave and Gildarts followed. He used this opportunity to catch the older man off guard, slinging the handcuffs around his wrists and pushing him back onto the bed.

'What the-?' the powerful wizard exclaimed in surprise as Natsu towered over him, flames of rage and revenge burning in his dragonic eyes.

He was stripped of the underwear he had been sleeping on and forced onto his stomach with his rear end exposed. He howled in pain as the dragon penetrated his ass - something he hadn't experienced in a long time - and started fucking him roughly.

'Take my cock, you filthy fucking bastard,' Natsu roared indignantly as he raped his mentor's hole, stretching his walls apart and filling him with his heat.

'Do you like that, Daddy?' he asked, mockingly.

'Oh yeah, Natsu,' Gildarts moaned in response, 'Fuck Daddy's ass!'

The mighty salamander laughed, amused at how quickly the older man had changed his tune once the roles were reversed. He increased his tempo, furiously fucking into the tight tunnel and ripping it apart. Gildarts reached down and beat himself off, cumming with a cry all over his hairy stomach. His ass clenched around Natsu's powerful cock, making him cum too and milking him for all he was worth. The dragon unloaded copious amounts of seed into the larger man's ass, so much so that it came leaking out when he removed his cock.

'Thanks for the slumber party, bitch,' Natsu chuckled, 'But in future, I don't think I need you to discipline me anymore.'

He grinned sadistically as he threw the key to the handcuffs out the window and left the apartment. Erza, Mira and now Gildarts, he thought to himself as he walked back to his own house. He was certainly proving to everyone that he was the top dog in Fairy Tail - although there was one S-class wizard in the guild he was yet to have his way with...

Next chapter: The penultimate chapter in the story and it's finally time for Laxus and the Thunder Legion to make their mark.