"Well that was fun, wasn't it?"
Kurama got no reply and looked down to see Naruto vast asleep with a smile on his face.
'Oh well, whatever. Let's take a look at the damage.' Kurama thought with an evil grin. The fox backed up a bit and moved his muzzle to Naruto's destroyed opening. He could probably fit his finger in there without touching the walls of the kit's cavern. Kurama felt satisfied with himself upon realising that and smiled once more.
'I wonder what I'll do with him next...'
After pondering on some possible ideas for a couple of minutes, Kurama got a eureka moment. With a snap of his claws dark orange chakra starts collecting around Naruto's neck. Slowly the chakra solidifies, revealing a collar in Kurama's colours: Mostly orange with thin bands of black on the top and bottom. On the front, so at Naruto's throat, appears a badge in the shape of Kurama's head, making very clear who the boy belongs to. Naruto is vast asleep and does not notice a thing.
'Khehehe... I'll tell him more about my little gift when he wakes up.' Kurama thinks to himself before changing back to his original gigantic size. The fox stretches in a cat-like manner and waits a bit for his cock to shrink and reunite with the inside of his sheath. Then, he yawns and curls up to catch some Z's himself.
'God it still feels like my ass is being stretched.' Was the first thing Naruto thought as he woke up, still in his mindscape.
"Well, well, well, look who finally woke up from his beauty sleep."
Just the sound of his master's voice was enough for Naruto to start getting hard already. After opening his eyes he saw the massive fox laying on his side with a paw holding his head up.
"My, my, aren't you eager." Kurama commented. "Notice anything different?"
Naruto stands up at those words and the first thing he notices is that he is still naked. Not that he would have it any other way in the presence of master Kurama. He does feel something touching his neck and throat, which makes him look down.
"It's a collar! Thank you master!" Naruto screams in excitement.
"Don't mention it kit. Besides, I have not even told you the best part yet." Kurama starts as a smile appears on his muzzle. "The collar will do something special that you will no doubt like once it comes into contact with my fresh cum."
Naruto's eyes became wide and his hard cock twitched. That definitely got Naruto excited.
"What will it do?"
"Khehehe wouldn't you like to know. That will be a surprise for when you can make me cum again. I will not stop you from getting what you need." Kurama's smile turned into a knowing grin as he pointed to his sheathed cock. 'God I love seeing him so needy for my potent fox seed.'
"However, I will not be helping you either, so good luck!" The giant vulpine finished, before laying down on his back, closing his eyes, and crossing his legs, leaving his sheath resting on his orange furred belly. With a paw he grabbed his balls and pulled them up to let them rest on his legs, instead of getting crushed by them.
'There, that should give him enough motivation.'
Naruto was completely mesmerized by his master. Seeing him grab his balls to put them in a more comfortable position just rubbed Naruto the right way, as evidenced by the pre now leaking from his cock. Master Kurama was letting him do whatever to make the fox cum! Quickly Naruto became determined and started walking - okay, sprinting - towards the enormous fox' hips.
'I wonder what he'll come up with. It makes it easier for him that his complete submission to me already turns me on, lucky kit.' Kurama thought to himself, still with his eyes closed. Then he felt Naruto jump on him, in front of his sheath. Slowly Naruto made his way over to the sheath's opening. Once there, he noticed that he was about as tall as the sheath was wide. He took a good whiff and was rewarded with his lungs full of the fox' potent, heavy musk.
'Ahhhh so good! Okay, step one: Get master's cock out of its sheath. I'll just start with his balls, maybe that will do something.' Naruto thought to himself after noticing not even one bit of pink poking out yet. He took a couple of steps down towards the furry jewels while dragging his hand through the sheath's fur.
'Hmmm starting with the balls eh? ' Kurama thought as he felt the boy walk over his groin area. 'Touching my sheath's like that is a nice touch though, I'll admit.' The fox let out a silent purr at the feeling.
Once he arrived at the gigantic ballsack, Naruto was not sure how to continue. 'Damn these things are as big as a small house, each!' He settled on awkwardly hugging one of the orbs, and started carefully kneading it.
'As nice as it feels for the moment, this is not nearly going to cut it if he wants my cum. He'll have to change his strategy in a minute if he wants any chance of success.'
Naruto continues to massage his master's furry scrotum for a couple of seconds and quickly realised he had to do something else. 'Hmm... Maybe climbing on top will give me some ideas.' He thought to himself. Carefully he climbed up the ball he was just massaging, which was easy considering he was a shinobi. Who knew that ninja skills would come in handy while pleasuring a gigantic horny fox demon?
Once up top Naruto looked around. 'Good to see that master is enjoying it.' He thought to himself as he looked towards the nine-tailed fox. He saw that master still had his eyes closed with a content smile on his muzzle. 'Maybe master enjoyed it enough that his penis came out a little!' Excitedly, Naruto walked over his master's balls towards the massive sheath to take a look at its opening.
Meanwhile, Kurama felt every single one of Naruto's movements. 'Keh, the kit is so tiny that even with his full weight on my balls it only tickles a bit. In a GOOD way, I'll give him that. I believe that I'm even showing a bit of pink, but I am not going to look yet.'
Naruto looked down from atop his master's sheath and saw he struck gold, or... pink? About a meter of kurama's canine cock grew free of its sheath, and at the end an inviting bead of pre could be seen. With no time to waste, Naruto lowered his barenaked feet onto his master's tip. Then Naruto sat down on his butt and put one leg on each side of the massive penis (think horse riding). If Naruto wasn't hard already, then feeling his master's warm cock between his butt cheeks would have done the job.
'Ahh yes, definitely showing pink.' Kurama grinned to himself.
Naruto leaned forward until his nose was mere inches away from the cock he sat on. His sense of smell was instantly assaulted by the musk coming off of his master's member. And that only made Naruto harder. Carefully Naruto started licking whatever bit of vulpine cock he could get his tongue on.
'Keh well isn't that nice.' Kurama thought as he felt Naruto going to town with his tongue on his member. 'He seems to be so into it that I doubt he'll even notice me looking.' Out of curiosity Kurama finally opened his eyes and was greeted by the sight of Naruto laying on and lapping at his kitsune cock. Five minutes later Naruto still did not notice his master watching him. 'As fun as it is watching him being absolutely entranced by my cock, he'll never be able to make me cum like this.'
"Oi kit." Naruto finally looked up. "There is no way you are going to get my seed like this, so how about another deal? I'll reduce my size once again, but in return you will have to wear a chastity cage until next morning."
Naruto was a bit disappointed in himself that he again needed help from his master, but at least he'll be able to pleasure master properly and he'll get the cum he needs. And besides, how bad can a whatever cage be? Naruto had no idea what is even was, but he did not really care if it meant he could please his master better.
"I accept, master!" Naruto eventually replied.
"Splendid, now hold still while I do something about that puny erection of yours and put on the cage." With the deal accepted, Kurama placed Naruto on the ground with a tail. The fox then lifted a paw and used his control over this space to forcefully make Naruto's penis flaccid again.
"AAHh!" It did not really hurt, but it did feel weird to get rid of an erection like that. As soon as Naruto was fully flaccid, he could feel a cage made of chakra appear around his groin. His penis would not be able to grow even a millimeter now. 'Ah, so that is a chastity cage.'
True to his word, Kurama started shrinking not a second after putting the cage on Naruto. Once he was the size of a large horse, he stopped shrinking and once again laid on his back with his paws behind his head and closed his eyes. Naruto kept staring at the fox for a couple of seconds
"Well, come on. At this rate I'll be fully sheathed again." Kurama said with a smirk on his muzzle. Naruto did not need to be told twice and quickly moved to sit beside the fox' groin area. Kurama's shaft was only about a quarter of the way out of its sheath and looked in desperate need of attention. Slowly, Naruto moved his head towards his master's exposed member until he could again clearly smell the potent fox musk he'd come to love. Naruto stuck out his tongue and dragged it from the tip of Kurama's cock to where the shaft met the sheath.
'Aahhh as much fun as it is dominating the kit in my real size, I cannot deny that it feels much better like this.' Kurama purred as he felt Naruto's tongue touch his cock again. Naruto kept going back and forth with his tongue on his master's growing member. Kurama could feel himself getting harder and slowly growing out of his sheath. As Naruto kept licking he could feel himself start to drip precum on his stomach. Eventually Naruto reluctantly moved his head away from the cock he was using like a lollipop to try something different.
'Man, master tastes good.' Naruto thought as he smacked his lips. 'Look at the pre master is producing! Can't let that go to waste!'
Naruto lapped up as much pre from Kurama's stomach as he could. Every lick made him more aroused and hungry for more of his master's warm pre seed. However, the chastity cage he was wearing prevented him from physically showing it. Naruto instinctively tried to stroke his own member, but was only met with mild frustration every time he touched the contraption. Meanwhile, Kurama opened his red, slitted eyes the moment Naruto started licking his stomach to enjoy the show.
'Khehe I can see that his need is already building.' Kurama commented as he saw Naruto trying to touch himself. The collar started glowing a little as well. Just then, Naruto decided to change his approach and started taking the fox in his mouth.
'Ohhh very nice.' Kurama felt his shaft being gripped tightly by Naruto's lips and had to actively prevent his hips from thrusting upwards.'Let me tease him a little.' The fox thought with a grin.
"I bet you cannot even think straight anymore with the need for release building within you." Naruto only moaned and started bobbing his head up and down the now half exposed shaft. The collar also started glowing a little brighter.
"I could easily knot your mouth right now and pump you full of my cum after I knot-fucked your face for a while. But where would the fun in that be? Remember, if you want my cum you will have to work for it."
Naruto seemed to take those words to heart and started taking Kurama's cock deeper, pushing the sheath away a little every time he went down and revealing more of the cock he was taking. Only half the shaft was enough to reach Naruto's throat, and every time the tip went in his throat, the collar started glowing a bit more.
"Khehehe look at you, desperate for my cum. Did you know that your collar starts glowing when you get horny? And I can see that you are already filled with lust right now. I'll tell you that it feels very nice when I feel my cock slide down your tight little throat and dump a load of precum in there."
Naruto heard those words and instantly the collar got brighter still. Hearing his master talk dirty to him like that was music to his ears.
"Come on, just a bit further. You have almost reached the knot."
Naruto went down as far as he could go and then some. He could feel the tip of his master's cock pressing deeper in his throat than ever before. Naruto's lips were kissing the knot he wanted to reach.
"Khehe, good kit." Kurama commented as he felt his knot pressed against the boy's lips.
Naruto stayed like that for a bit while the collar around his neck showed his lust increasing even further. Because of the chastity cage, however, so increased his frustration.
"Even though it is a good effort, you would be mistaken if you think I'll cum from this. Also, seeing the state of your collar, you seem to be getting desperate for release. Although you cannot touch your own puny cock, luckily for you males have prostates that may help you out. If only you had something to stimulate yours with... " Kurama said as he "innocently" tapped his chin like he was thinking.
Of course Kurama was teasing Naruto and knew full well what he was doing. Naruto picked up on the hint and quickly removed the vulpine shaft from his throat. As if he had no time to spare, Naruto stepped over Kurama's body with one leg, so that the fox laid between his legs. This gave Kurama a great view of the boy's frontside.
Carefully, Naruto grabbed his master's shaft and pointed it upwards as he squatted a little. He did not even need to lower himself much before he felt the tip touch his pucker.
"AH!" Naruto moaned at the first contact. Although he did not have time to prep himself, he was confident he could take the well-lubed fox cock if he took it slow. Kurama eyed Naruto like a predator would size up their prey, almost as if he was daring the boy to take his massive member. Naruto lowered himself a bit more and felt the tip of Kurama's forearm-sized shaft forcing his rosebud to spread open.
"You are not going to be able to milk me properly with only the tip in. In fact, I think you will not be able to make me cum by just riding me. You will probably have to knot-fuck yourself with my thick kitsune cock before I cum." Kurama said as he saw Naruto was somewhat struggling with his member. A little encouragement wouldn't hurt.
"Of course, master! I'll give you the best knot-fucking you've ever had!" Naruto replied. His determination seemed to be increased as his collar shone brighter. Kurama could see a bit of Naruto's own pre leaking from the chastity cage.
"I'll believe it when I see it, kit."
Even though Naruto still only had about the length of a finger inside him, he started a little bouncing motion. Every time he went down, he tried to get a little bit further.
'Hmmmm, there we go. Now he seems to be getting serious.' Kurama hummed approvingly.
With every thrust Naruto could feel his master's warm cock sliding against his prostate, making him more eager for release. The vulpine shaft he was riding stretched his hole just like it did yesterday. The familiar feeling of his master's red rocket penetrating his ass over and over again was exhilarating. When Naruto managed to get half of his master's shaft in, he decided that he had stretched enough. On his next descent, Naruto let gravity do the work and completely relaxed his leg muscles.
"AHH!" Naruto moaned while looking up with his mouth open as he felt himself being drilled by the fox' hard rod. Instantly, his own jailed cock leaked more precum and his collar once more started to shine brighter. He could feel himself sitting on his master's knot, which let him know that he needed to stretch more before he could properly knot-fuck.
"Khehe very good, little kit. Do you see that? Can you see my grand cock bulging your body?" Naruto looked down and true to Kurama's words, he could see the outline of his master's cock!
"Now as I said, you will not be able to get my cum if you don't knot-fuck yourself. Luckily for you, you already milked quite a bit of my precum. I can see that my knot is absolutely soaked in the stuff."
"Of course, master! I am not done yet *pant*." Naruto said as he panted from the exercise he just performed. After regaining his composure, Naruto lifted himself up a little and let his ass crash down on the knot once more.
Again.
Again.
Every time his bottom got reunited with his master's inflated knot Naruto stretched a bit more and felt a bigger part of the knot slip in.
"HNG I can feel that you are getting close to knotting. Come on kit, just a bit more. Think of the cum you will get!" Kurama was really getting into it now.
"Yes master!" Three more thrusts and...
*POP* "AHH!" For the second time, Naruto got knotted by the kitsune. Although, this time Naruto did it himself.
"AHHHH there we go kit, now ride me to the finish line!" Kurama demanded. Not that Naruto was not planning on doing that anyway.
It took a bit of effort, but Naruto managed to lift himself off his master's throbbing knot and descended once more... twice more... thrice more...
"*pant* khehehe *pant* I'm getting very close now, kit!"
"Give me your cum, master Kurama!" Naruto begged.
"HMNGN as you wish!!"
The next time Naruto knotted himself on the fox' very close member, Kurama came.
"AHHH! Enjoy the feeling of my cum filling you up, kit!" And Naruto did. He felt the warmth of his master's spunk spreading through his body. When he looked down, he could see his belly bulge a bit to make room for Kurama's seed.
"I can feel your cum staining my insides, master!" Naruto got desperate for his master's cum. That desperation combined with his inability to climax due to the cage around his cock made Naruto act on his own desire without thinking.
"Huh? WHAT DO YOU THINK YOU ARE DOING?" Kurama roared while he was still shooting spurts of fox cum from his tip. Climaxing without his kit's warm body around his cock was NOT what Kurama wanted.
Naruto once more unknotted himself and removed the whole shaft from his ass as well, which made Kurama outraged.
"Sorry master, but I am desperate for your cum." Naruto quickly collected some fresh cum from his ass and smeared it on his brightly glowing collar. Immediately after that the fox below him stood up in rage, throwing Naruto to the side a couple of meters away.
'Damn that kit. To think he had the guts to nearly blue-ball me! I'll let the collar do its work, but then... The kit will pay! For now I will enjoy the show.'
Naruto grunted at the impact and got up on his knees. He looked at his collar, and could only stare. Something that looked like dense, glowing red chakra started slowly spreading from the collar. Naruto could do nothing as the substance started covering his body and head at the same time. It creeped up Naruto's face and felt strangely comforting. He was afraid it would simply flow into his eyes, so Naruto closed them as soon as the stuff got close. While Naruto had his eyes closed he could feel it extending from his face. In fact, he could feel that the stuff already encapsulated his whole head! Luckily, it seemed to bypass his eyes and opened them once more.
Instantly, Naruto saw that he had a glowing vulpine muzzle on his face. It was lighter than Kurama's color. A mix between the fox' orange and Naruto's own yellow hair. Then, the substance stopped glowing and settled as some sort of latex-like material. Naruto was too stunned to do anything, but at the same time was kind of intrigued about what was happening. It seemed like the collar was giving him some sort of fox suit.
Naruto's thoughts were interrupted when he felt the substance reach his still caged cock. He had no idea what it did down there, because the cage prevented him from seeing it, but definitely something was happening. Luckily for Naruto, it did not hurt at all.
Then he looked at his hands, which were now getting covered by the substance. It did not seem to do much, but he did notice the latexy nails were longer than his own. Actually, they looked kind of like his master's forepaws, but then with the same color as his latex-made muzzle!
Next he felt his feet getting covered and looked down. He saw the substance settle in the shape of a fox' hind paw.
'So basically this is a fox suit! Probably because master likes it more.' Naruto reasoned as he was now fully covered in an orange-yellow fox suit. Naruto carefully started feeling the suit with his hand... err... paw? He noticed that it almost felt like the suit was not there. That this was almost like a new body!
He checked if he had fox ears, and sure enough, he felt them protruding from the top of his head. And they were long. Probably very similar to his master's ears. If he had to bet, he'd say that he had the same black marking in his ears and around his eyes. Even better, it felt like he was touching his own ears, not the suit's! Then he tried to stand up on his feet (or hind paws?).
Immediately Naruto lost balance and fell backwards. 'Ouch...' He looked at his butt and saw that nine tails were still forming. They were the same orange-yellow color as the rest of his suit. He carefully touched one of them with a paw and to his surprise, he could actually feel that his tail was being touched. It's like he had nine new limbs!
'Khehe, look at that. The collar worked perfectly.' Kurama mused as he saw the suit being formed around Naruto. 'That already looks much more fuckable than that human form.' Slowly, Kurama started walking to the boy in the latex-like kitsune suit, who had his back turned towards him. His vulpine cock dangled between his legs as it was still hard and eager. Every now and then, a little bit of cum still escaped from the tip. Kurama would not settle for that half-assed climax, and with Naruto in that suit, the fox' lust only heightened.
'Okay, so I basically look like master, only a bit lighter in color. That annoying cage is still around my cock and I have no idea what that suit even did down there. Also, the collar is still there. When I open my mouth, the suit's maw opens as well. I can also feel body parts that I did not have before. It's like this suit is an extension of my body!' Naruto summarized.
'I wonder if the suit blocks my butt...' He thought to himself and reached with a finger to test his hypothesis. He felt that he could still touch his pucker. 'Sweet! I wonder if master Kurama wants to take me in this suit. He did not seem very pleased...'
"Are you ready for your punishment, kit?"
Speak of the devil and he shall appear. Naruto quickly turned around and was greeted by the kitsune looking at him with an almost feral, lustful gaze. Looking at Kurama's cock, Naruto realised that his master was far from done for today. And with the angry expression on his face, Naruto was sure he would not go easy at all.