Warning: This chapter includes graphic descriptions of incestuous sexual intercourse. If that's not something you can tolerate, my advice would be to stop reading now.
Natsu opened the door to the training room at the back of the guild and stepped inside. He was horny as shit but instead of jacking off, he thought a good work-out might help him blow off steam. Elfman was the only other person there, as usual. He was using one of the exercise machines to work on his biceps.
'Sup Elfman,' Natsu nodded to his guildmate as he joined him at one of the nearby machines.
'Hey Natsu,' the bodybuilder-like man responded, 'Training to become a real man?'
'You know it,' the dragon slayer responded.
They worked out side-by-side for a couple of hours, using various different machines to pump up all the different muscles in their bodies. By the end of their intense training session, they were both panting for breath and drenched in sweat.
'That was a great work-out,' Elfman chimed, throwing his strong arm around Natsu's shoulders and grinning.
Natsu was hit with a blast of Elfman's strong scent, coming from his exposed armpit. He felt his cock twitch in desire.
'Yeah,' the fire dragon responded, and then an idea popped into his head, 'But now my body is all sore...'
'How about a manly massage?' Elfman suggested, while rubbing his hands against Natsu's back.
'That sounds good,' Natsu smiled.
Elfman lay Natsu down on a mat on his stomach and sat on top of the much smaller man. He stripped the pink-haired boy of his vest and then pressed his massive hands against his back, using them to knead his worn muscles. Natsu groaned at the sensation.
'Damn Elfman, that feels good...'
Natsu's slutty moans were getting Elfman all worked up and he felt himself getting hard in his pants, 'Your body is so hot Natsu - I mean tense!'
'Yeah, my chest is really sore,' the dragon slayer hinted.
'Turn over then,' Elfman instructed.
Natsu did so and then Elfman sat back down, straddling the younger boy's hips and putting his hands back to work on his chest. He groped the fire wizard's hot pecs and squeezed them in his rough hands.
The treatment on his tits was too much for Natsu and he couldn't hold back any longer. Elfman felt the salamander's hard cock pushing up against him, making him even hornier. The two men dived at each other, their mouths plunging together, eager to get a taste of one another. They ground their throbbing hard-ons against each other as they made out hungrily.
'Mm, Natsu you smell so good,' Elfman moaned in between sloppy kisses.
'You too, Elf,' Natsu responded, 'Do you want to clean my pits for me?'
Elfman cheered, 'Hell yeah!'
Natsu raised his arms and crossed them behind his head, exposing his sweaty, hairy pits to the other man. Elfman lunged at them, taking a whiff of the manly odour and lapping at the sweat.
Natsu moaned as Elfman licked out his armpits and then demanded, 'Now I'm going to eat yours.'
Elfman obliged, folding his arms over his head and smothering the smaller boy with his pits. Natsu choked on the smell but was also aroused by it, savouring the flavour as he licked up all the sweat off the other man's thick bushes of hair.
'Fuck yeah!' Elfman groaned in satisfaction.
'Delicious,' Natsu said, licking his lips, 'Now I want to smell your manhole.'
The fire dragon pushed the much heavier man off of him and forced him on to his hands and knees. He knelt behind him and pulled down his sweatpants, revealing a skimpy black thong underneath. He ripped that off too and then dove in to Elfman's sweaty ass. The foul scent hit him immediately and filled his nostrils, making the pink-haired boy dizzy with desire. He spread the other man's large cheeks apart so he had better access to his hole and then plunged his tongue in to the tight entrance. Elfman let out a manly moan as the hot, slick tongue snaked its way inside him.
'Yeah baby, taste my manly asshole!' the take-over wizard cried.
Elfman's hole rivalled Lucy's and Gajeel's for the tastiest meal Natsu had ever had and he groaned sofly with lust as he cleaned the older man's dirty tunnel with his tongue. The feeling was too much for Elfman and he broke down, desperate for more.
'Give it to me, Natsu!' he begged, 'Fuck me like a MAN!'
Natsu wasted no time in fulfilling his guildmate's wish. He stripped himself of his trousers and positioned his hot rod at Elfman's hungry hole. It was dry and tight as a clam so it was a tight fit, but Natsu forced his way in, filling Elfman with his massive cock. Elfman let out a manly scream from the sensation of being stretched apart by such an enormous piece of meat.
'Fucking hell, Elfman, you're so damn tight!' Natsu growled as he started to develop rhythym with his fucking.
'Yeah baby,' Elfman whined, 'Pound my super tight ass!'
'Oh I will,' Natsu promised, picking up the speed and strength of his thrusts so that he was slamming his cock into Elfman's pleading mancave.
The fire wizard reached around with one of his hands to take hold of Elfman's throbbing cock. He stroked it roughly as he fucked the white-haired man, making him moan even louder.
'Nastu, you make me feel like a man!' Elfman shouted as he felt the tension well up in his balls, signalling he was about to cum.
The younger man kept jacking him off until he came, spilling his seed all over the ground and clenching his sphincter around the hot cock inside him. This was enough to drive Natsu over the ledge too, bellowing loudly as he blew his thick load in to the other man.
Natsu collapsed on top of the larger man, cock still buried deep inside, and kissed him on his shoulders, 'That was great,' he panted.
'Definitely MANLY!' Elfman agreed.
Just then, the door to the training room opened and Natsu and Elfman heard the gasps of two women behind them. They turned around to see Elfman's sisters, Mira and Lisanna, staring at them in shock.
'Big sis! Little sis!' Elfman yelped in surprise.
'Natsu... And Elf...?' Lisanna looked upset, but Mira just giggled.
'I'm sorry you had to see this!' Elfman stuttered as he looked around frantically for his clothes.
'Don't be sorry, little bro. We all have needs,' Mira said with a wink to the two boys.
Suddenly, Natsu felt himself getting horny again. He stared Mira and Lisanna deep in the eyes and started stroking his cock while eyeing them up.
'N-Natsu!' Lisanna stammered, blushing.
Mira giggled again, 'Looks like you could use a hand,' she said and walked over to where Natsu was sitting.
The older woman knelt down next to the younger mage and started massaging his long, thick shaft with her delicate little hands. Natsu grabbed her and pulled her in for a fiery kiss.
'Bis sis...' Elfman murmured in surprise, but found himself strangely turned on by the sight of his sister making out with another man.
Natsu looked over at the youngest Strauss sibling who was still standing awkwardly at the entrance, 'Are you going to join?'
'Umm...' she muttered, looking down at her feet.
'Come on, Lis,' Mira beckoned for her little sister to come towards her, 'I'll teach you how to be a real lady!'
'O-okay...' the young girl slowly walked towards the other three and knelt down nearby.
Mira smiled her usual sweet smile and then opened her mouth to start sucking on Natsu's penis. She took the whole thing in with ease, proving her experience in this area. She bobbed her head up and down, slurping at the thick meat that filled her mouth and throat. Natsu started groaning in satisfaction from the expert blowjob he was receiving.
The white-haired woman raised one of her hands and used it to cup Natsu's large, hairy balls. She squeezed on them - gently at first, but then got harder, pulling on them tightly and making Natsu hiss. Then with her other hand, she slid her middle finger inside the dragon's tight butthole and wriggled it around deep inside. When she found his sweet spot, she started pressing on it and rubbing it.
'Damn, sis...' Elfman said in awe, mesmerized by his sister's work, while Lisanna watched intently.
Natsu moaned in agreement. He had never had a blowjob this good before. Mira's triple technique was proving incredibly effective as he felt himself building up to another orgasm. It wasn't long before he cried out loud, his balls tightened in Mira's clasp, his asshole clamped around her finger and he shot his creamy load right down her throat.
Mira pulled away and licked her lips, 'Mm, I've always loved dragon milk!'
This peaked Natsu's curiousity, 'You've been with a dragon slayer before? Who?'
Mira just giggled again, 'That's a secret!'
She then turned to Lisanna who still looked incredibly nervous and said, 'Lis, why don't you start by practicing on Elfman?'
Lisanna gulped as she looked from her sister to her brother who was hard again and stroking his cock. It was very large, at least 7 inches long and quite thick, and the young girl doubted she would be able to take all of it like Mira was doing.
'Come on, sis, just do your best,' Elfman said, holding his hand out for his sister and pulling her towards him.
On her hands and knees, Lisanna leaned down and took hold of her brother's cock with one of her hands. She opened her mouth as wide as she could and took the head in, licking at the tip to get a taste. Not bad, she thought. She felt a large hand on the back of her head and moaned a little as her brother pushed her further down onto his dick. She got about halfway before she started to gag which made Elfman stop so that she could catch her breath.
'Nah man, you gotta be rough with her!' Natsu yelled, 'She'll never learn like that!'
And with that, he grabbed Lisanna by the back of her hair and slammed her down on to Elfman's cock, making her gag and cough and scream in to his manhood.
'Natsu!' Elfman snapped angrily at the salamander and then looked down at his sister, 'Are you okay?'
She made a small whimpering noise in response and then started sucking on the meat in her mouth. She tried her hardest to relax her throat so that she could take as much in as possible, but it was very difficult. She got about three quarters of the way down before she started gagging again, but she took a moment to collect herself and then continued.
'See?' Natsu smiled in satisfaction and Mira did too.
'While you're pleasing bro, I'll show you what it's like to be pleasured,' Mira declared as she moved behind the bent over girl.
The older sister rubbed her hands over Lisanna's round ass and slid them over her snatch, making the younger white-haired girl whine. Mira peeled off her sister's tight denim shorts and white underwear, exposing her bare ass and pussy. She trailed kisses down the other girl's taint to her dripping pussy which she licked at delicately. She lapped at the slit a few times and then moved to her clitoris, circling her tongue around it and kissing it.
Elfman felt the vibrations on his cock from Lisanna's moans as Mira ate her out. Lisanna had never experienced anything like this before - not even from self-pleasure - so she was going crazy with desire. It wasn't long before her sister's talented tongue brought her to orgasm. She screamed around the cock inside her as she came, squirting her juices in to Mira's mouth.
'Did that feel good?' Elfman asked, removing himself from his sister's throat so that she could catch her breath and answer his question.
Lisanna nodded, completely red in the face, and stuttered, 'But...'
'But what?' her brother asked.
'I want more,' she pleaded, 'I want you inside me, big bro!'
Elfman was shocked at her forwardness while Mira giggled and Natsu cheered.
'Are you sure?' the large, beefy man asked, not wanting to hurt his little sister.
'Yes, very sure,' she nodded.
Mirajane took hold of her sister and helped her climb on top of their brother. Elfman took hold of her by the waist and positioned her over his throbbing cock. Lisanna slowly lowered herself down, pushing herself onto the long shaft beneath her. She whimpered as her virgin hole was stretched apart but fought through the pain until she was completely filled by her brother's cock.
The sight of the Strauss siblings going at it had gotten Natsu's ragingly hard again and he was stroking himself lazily as he watched them. Wanting some action of his own, he grabbed Mirajane and forced her onto her back against the ground. He took hold of her dark purple dress and ripped it apart, fully exposing the powerful wizard's sexy naked body. She looked up at him with lust in her eyes and he sneered his fangs at her hungrily in response.
The fire dragon pushed his powerful cock in to Mira's drenched pussy, slamming in to her in one migty thrust. Next to them, Lisanna had started to move up and down, riding on her brother's cock and moaning. Natsu took hold of Mira's big tits and clawed at them roughly while he fucked her, making her scream with pleasure. Lisanna was a little jealous that Natsu had now fucked her brother and her sister but not her, but she was happy to be losing her virginity to Elfman as she was sure he was much kinder than the salamander would have been. He was pounding in to Mira with a fury while Elfman was rocking his hips gently, trying not to hurt his younger sister too much.
Screams and moaned filled the room as the four mages fucked. Lisanna was the first to orgasm from being torn apart from her brother's big dick. She
came around her brother's shaft, making him cum too, shooting his load inside his little sister's womb. Then Natsu came, spilling yet another load in to Mira. His cock spasming inside her was enough to push her over the edge and she came as well.
They collapsed in a line on the floor, panting heavily and dizzy from their orgasms. A minute or two passed as they all relaxed and recovered from their intense fuck. It was Lisanna who spoke up first.
'Sooo, what's next?' she asked.
'Next!?' Elfman and Mira gasped in unison, surprised at their little sister's tenacity.
'Well...' Natsu sat back up and looked at Lisanna, 'I've fucked Elfman and I've fucked Mirajane, but I still haven't fucked you.'
Lisanna smiled at her childhood friend and crush - that was exactly what she was hoping to hear.
Natsu jumped on top of her and started kissing her, running his hands all over her tight little body. She moaned in to his hot mouth as he gripped her boobs and squeezed them roughly. He trailed kisses down her neck and bit down hard, causing her to scream out loud, then continued down her body towards her nether regions. He spread her legs with his hands, exposed her drenched pussy and lunged at it face-first. He lapped at her folds, getting a taste of her sweet juices as well as her brother's semen that was leaking out.
'I'm gonna rape you so hard,' he threatened, but Lisanna was not intimidated.
'Do your worst,' she retorted with a challenging glare.
'I guess that means I get to fuck you, big sis,' Elfman said, making his way over to his sister.
She giggled, 'I don't think so, little bro!'
She pounced on him and forced him on to his hands and knees so that his big, muscular butt was sticking out in the air. She spanked it a few times and laughed, making him moan. She used her transformation magic to change her sweet, beautiful pussy into a big, handsome cock and pointed it at her brother's hungry hole.
'I'm going to fuck you!' she declared.
Natsu lifted Lisanna's legs in to the air and put them over his shoulder, he then took hold of his cock and stroked it a few times before pushing it in to her rear entarnce. The young girl shrieked in surprise as her asshole was filled by the dragon's slayer mighty cock and he started slamming in to her.
Mira also pushed inside Elfman's ass, filling him with her dick and fucking him, 'How manly is it to be fucked by your sister?'
Elfman growled, 'Not manly at all... But it feels good!'
'Who's the real man?' she mocked, spanking him in the ass a few more times.
'You are sis!' Elfman admitted, 'You're the manliest man of them all!'
'Oh Natsu!' Lisanna was screaming from the brutal ass-raping she was getting from the fire dragon, feeling like her insides were going to erupt from the intense heat and pain.
'You did tell me to do my worst,' Natsu reminded the poor girl as he ploughed in to her, ripping her apart with every thrust.
Lisanna started sobbing from the beating but said sternly, 'I know. This is... Nothing!'
Natsu and Mirajane continued to fuck the two younger Strauss siblings until they were about ready to cum.
'I'm gonna fill you up, Elf!' Mira informed him.
'You too, Lis,' Natsu added.
With two mighty howls, they both came, Mirajane shooting her load up her unmanly brother's pussy, while Natsu blew his inside Lisanna's wrecked asshole. When they were down, they both pulled out and Mira returned her genitalia to normal. They looked at each other and gave each other a high-five while Elfman and Lisanna just lay defeated on the ground.
'Anyway, Elfman,' said Mira, 'We actually came here to get you for dinner.'
She then turned to Natsu and asked, 'Do you want to come too, Natsu?'
'Sure!' he responded enthusiastically, 'After all that, I'm starved!'
Mira giggled, 'Okay, but first we should clean this place up a little bit. The master will be mad if he sees all this mess!'
Next time: Natsu declares himself the new King of the Celestial Spirits and makes his new servants do his bidding.