Disclaimer: First Chapter
Story Start!

'There are so many people here.' Naruto thought to himself as he looked around at the crowd around him. It was a professional Keijo match, though they were showing off some Warm up matches by letting fans with tickets try their hand at going up against the pros. It was the only time that men were able to stand ground on the pro stands, and not just in a practice ring or something. Naruto was wearing his gifts, and he could feel eyes on him as he stood on the land in the middle of the water.

"Go Naruto!"

His mother was screaming his name with excitement as she held up a flag with their family symbol on it, a red spiral. Naruto's cheeks turned red in embarassment, before he slapped them. He already felt stupid enough wearing a light life jacket over his back.

"Don't suck!"

"You know what, go screw yourself Perv!" Naruto shouted back at Jiraiya as he walked over to near the edge of the land and shouted at his perverted teacher. The other ticket players gave him looks, while the professional Keijo player got onto the land with a raised eyebrow. Naruto was slouched over as he raised his middle finger, warm up matches were not shown on TV very often, and flipped off the perverted hermit. "You too Sakura, I see you laughing!" Naruto pointed at Sakura as she laughed at him.

She must have a free day from her medical school if she was here to watch him make a fool of himself.

"Heh pretty boy, maybe you should be paying attention to the rules."

Naruto turned and looked with widened eyes when he heard the words "pretty boy" since he had never been called that before. Naruto turned around, and he could see both men and women on the land laughing at him. He was on a stage with 4 other people, other than the pro Keijo player. For starters, there was an older man in his 40s that was on the stage. There was a young girl maybe 13 years old, and a more homely geekish boy around his age. Finally there was a woman in his early 30s on the stage as well. The ref was standing on a nearby land as she explained the rules to those who weren't familiar with them.

"-you can only knock your opponent into the water using your chest and butt, and don't try to climb back onto the land, it's dangerous."

'I missed most of that.' Naruto thought to himself, but then again he already knew the rules thanks to his mother and him watching Keijo on TV. Naruto stretched out his back, and leaned forward with his hands on his knees. "Uuuuuuh." Naruto didn't have words for when the bell rang, letting everyone know that it was time.

The pro was a young woman about his age, but shorter than him. She had chin length, dark purple hair, and similar eyes. She had a very slender body, more in the way of hips than breasts. She had her arms crossed under her bust, and she wore a very nice swimsuit that showed off the curve of her hips.

Jin Mutou.

"Try not to blink, or my butt sword will cut you down faster than you can react to." Jin warned them, and Naruto tensed when he heard that warning.

Warning, not threat, but a statement.

She vanished from view and appeared next to the 13 year old girl, gently tapping the girl into the water, easily knocking her off of her balance. The girl yelped and went into the water with a splash. The lose of balance on the small land made the older man lose his own balance completely, and taking advantage of that, Jin got down low and swept his legs out from under him using nothing but her hips. Naruto steadied himself and went towards the center of the land where the balance was easiest.

'He understood that the edges have the worst balance, and went to correct it... so he isn't an idiot.' Jin thought to herself when she noticed his actions, and went towards him. She turned herself around, and soared at him ass first, wanting to strike him out as quickly as possible.

These warm up matches were barely even a warm up for her ass.

Naruto moved his foot back and took his ass to his stomach, moving back only a little, and without losing his balance.

"Guh." Naruto couldn't hold back the grunt when he realized that her butt had packed in enough force in that attack to really pack a punch. Just the movement cause the land to shake, and knocked the older woman into the water. Naruto leaned to his side and sidestepped her when she turned around and got ready to hit him with a chest attack.

Ass.

Naruto saw ass in his face before he could blink, and ducked underneath it as soon as he could. Her ass grazed the side of his face.

'His reaction speed isn't bad, he handled that well enough.' Jin thought as she went fasted, and she nailed him in the chest with her breast. Naruto was knocked off of his feet by the force, sent flying towards the water.

Naruto's eyes went up towards the sky, and he could see his mother cheering for him, so leaning backwards as far as he could he flipped in the air and landed on his feet... on his toes at the edge of the stage. Naruto tensed his legs and grinned as he looked towards Jin, and she was actually surprised.

"... I'm actually impressed... but the longer you stay on this land, the more beaten up you are going to get. I would hate for you to hate me." Jin spoke to him calmly as she watched him get back fully onto the land. Naruto rubbed his cheek where she got him, a bruise actually forming on his skin.

"Go Naruto, that was a good recovery!"

"... This is kind of fun." Naruto muttered to himself with a his grin turning into a small smile, before the grin returned full force. Naruto ran at Jin, and she saw his moves rather easily as he thrust his chest towards her. She side stepped him and with a quick thrust, she hit him in the side with her ass. She knocked him off balance, and she hit him in the head with a second shot before he could even fall down all of the way.

Naruto spun on his heel and used his own weight to regain his balance, and returned by swinging his hip at Jin.

She jumped back and slammed her feet down at the edge to knock the land off balance. Naruto stood firm though, but in doing that she rushed towards him.

"I'm ending this now, hope you enjoyed your fun." Jin stated with a small smile on her face. She moved her hips faster than the average eye could see. She thrust her ass at him 1... 2... 4... 16... 64 times in what felt like a second. Naruto used his chest to absorb most of the blows, but many of them hit him in the legs, face, and even in his arms. Naruto was pushed back to the edge as he curled his toes to grip the land. Naruto groaned when he felt like he was actually being punched just as many times.

He didn't fall down though.

Jin's eyes widened when Naruto slammed his muscular chest right into the back of her head, knocking her a step forward. She stumbled from surprise and turned around to look at him, his body forming some bruises, but his grin not leaving his face.

"You took a Butt Gattling, and you didn't fall... That's... I'm honestly impressed, I didn't know men could have such a great sense of balance." Jin said as she recovered from the shock of the attack. She took a step towards Naruto.

Naruto tried to dodge her first strike, and it grazed his arm. The next strike gazed his head when he dodged it. The third, fourth, and fifth strikes grazes the sides of his chest, and the Naruto took the next few strikes head on. Naruto stepped forward and leaned his head back, her butt skid across his chest, and she knocked herself off of her feet. Naruto stood up straight again and knocked her butt higher into the air with his chest.

'I can feel it.' Naruto thought to himself.

The crowd had been silenced when Jin caught herself on the land and looked back towards Naruto with her eyes genuinely widened in shock.

'He's... getting better the longer this goes on. It's like the longer he is on the land, the more in tune he becomes with it... He's becoming one with the land. He wasn't even knocked off balance that time.' Jin thought to herself as she turned to face Naruto. Sure, she was holding back since she wasn't going against a keijo player, but the fact he had even stood up to her so far showed that he was NOT a normal person on the land.

Kushina looked at Jiraiya with a raised eyebrow.

"... What did you teach my son?" Kushina asked Jiraiya, who looked at his martial arts student with a large grin on his face.

"I taught him... how to sit still." Jiraiya bragged.

"Okay, kiddy gloves off. You want to warm me up... you can get a taste of my ass sword for real now." Jin stated with her eyes growing colder.

This was now really starting to feel like a warm up.

"Woah!" Naruto shouted when she came at him faster than ever before. Naruto jumped to the side when he felt her coming at him. Naruto swung his ass to the right, and she was standing there with a strike of her own. Their butts collided, and Jin smiled for a moment when she saw that he had not only reacted to her, but he had done it without actually seeing her. She vanished against and Naruto blocked her breasts with his chest, taking the brunt of her attack, using his muscles to deflect most of the power.

The power deflected went back to her.

Jin saw Naruto's grin and grinned darkly back at him. She turned around, and started to fire off a stronger attack at him.

Butt Gattling!

He weaved through the attacks as if he was seeing what was happening. Even faster than before, attacks that he hadn't been able to fully dodge, were not being almost expertly dodged by Naruto. He stepped back and turned around, back flipped over her, landing in front of her, and slamming the side of his butt into her shoulder. She was pushed back on her feet, and Naruto turned to push his chest against her skull. She stood up and returned the blow with her own chest.

'He's matching my power!' Jin thought when she found that she wasn't able to knock him off balance anymore.

The crowd was still stunned when they saw this practice... this warm up match turning into a full fledged battle. It was no longer just a warm up for Jin, now she was actually trying to knock him into the water.

"... This... this is fun!" Naruto shouted out with a grin on his face as he enjoyed the warm up match.

"Lets see if THIS is fun!" Jin leaned down and moved her hips up at her top speed. A literaly blade of wind force moved towards Naruto. Naruto watched them come at him, and he slammed his foot into the land behind him. The land sank into the water, with the wind blades sailing above his head. "My Ass Sword wants to tear you to shreds now, you've already sealed your fate! You've gotten me excited!" Jin called out to Naruto as he moved towards her, weaving through her wind blades.

How!?

The entire crowd was wondering how.

"He's feeling the vibrations in the land itself, and he is automatically adjusting his body to the land. It's like he's become a sage of the forest." A voice spoke from behind Jiraiya and Kushina as people watched Naruto dodging the wind blades the opponent was sending his way. Kushina looked and smiled widely when she saw the woman that was standing behind them.

"You're Nagiza Ujibe!" Kushina almost squeeled when she saw one of her idols next to her.

The woman was a short woman, an overweight one at that, with orangish red hair and similar eyes. She had a mole under her right eye, and was wearing a simple white and black tee shirt with fitting pants. She had narrowed eyes that were watching the fight with interest, and she had her arms crossed as she analyzed what Naruto was doing.

"... Naruto knows how to sit still." Jiraiya stated as he looked at Naruto.

"What do you mean?" Kushina asked as Naruto and Jin continued to battle. "Wait, why are you here?" Kushina asked Nagisa, who smiled.

"I like to see if there are any good candidates for Keijo players in these warm up matches. Check out the young girls with potential..." Nagisa watched with narrowed eyes. She saw Naruto take a few strong ass attacks to various spots on his body, and then close the distance as he was taking those attacks. "... Naruto... That was his name? Naruto is masterfully adjusting his body to any vibrations the stage emits. His body has learned how to take into account all movements on the stage, adjust to them... As the battle goes on, he becomes better able to read not only the land... but his oppoent as they move on the land... That is a frightening ability is trained correctly." Nagisa pointed out as she watched Naruto and Jin duke it out.

She watched the two almost smiling at each other.

Jin kicked up her speed more than ever.

She was moving fast enough that after-images of her were appearing around Naruto. Naruto looked around in a happy panic, Jin watched as Naruto seemed to keep track of her. When she would attack him, he would almost seem to predict where she would be.

"... You have good eyes." Jiraiya commented to Nagisa, and she looked up at Jiraiya.

"His skill doesn't seem to be fully trained though. It takes time for him to become one with the land, and it takes more time for him to learn to predict his opponent. Not to mention the stress this would cause his body." Nagisa pointed out as she watched Naruto's legs shake a little. Jiraiya nodded his head at that.

"Stress?" Kushina asked, unsure of what the stress could be caused by.

"It might look like Naruto is standing perfectly still to keep his balance... but the truth is that his body is absorbing the vibrations and energy caused by movements on the land. The water, his opponents, and his own movements cause those vibrations." Jiraiya started his own explaination of the technique that he had taught to Naruto, for martial arts of course. "Vibrations can cause stress to the muscles... so while absorbing the vibrations, he is also draining his leg's stamina just as quickly. The stress this puts on his body is immense." Jiraiya pointed out the downside of what Naruto was subconsciously doing.

Kushina looked towards Naruto with worry as she gripped her own legs in her chair.

Nagisa looked at the action curiously for a second.

"His reaction time, stability, and durability are all increased with this technique... but the longer he uses it, the more quickly it will run down his stamina. Not to mention it takes time for him to use it... but this is amazing." Nagisa spoke, and Sakura looked at them all, and she frowned for a second when she noticed all of the bruises on Naruto's body, combined with the stress to his legs when the shaking got even worse than before.

"... It's not just reaction time... by sensing the vibrations in the land, Naruto can sense where his opponent will be next. Instead of reacting, he is acting at the same time as that girl." Sakura looked over the damage that Naruto was taking, and the way he was taking it.

"Still having fun!" Jin shouted out as she rushed towards Naruto.

Naruto grinned.

"Hell yeah! This is more fun than fist fighting!" Naruto declared as he ran at her as well. When she used an Ass Gattling, Naruto weaved underneath her attacks and hit her in the legs with his hip. She spun around and slammed her breasts into the top of her head, nearly sending his forehead to the land. Naruto flipped and hit the top of her own head with his tailbone, and she knocked him back while he was in the air with her ass.

The two were only apart for a second.

They were back at it seconds later, going ass to ass once more. Jin moved her hips down, before she knocked him into the air by suddenly pushing them up. She jumped up and spun, while he spun in the opposite direction, putting one foot back to the ground to do it. She knocked him in the head with her ass, and he knocked her in the head with his.

'His jaw is harder than a woman's jaw.' Jin noted when she noticed that the blow didn't have as much of an effect.

'Damn, her ass hits hard... how can something this soft hit so hard?' Naruto thought as he grinned, and the two broke apart.

'His legs are shaking.' Jin noted when she saw Naruto's reaction time seem to go down a little. She moved back to battling him, and they traded blows.

She felt something.

Her nipples hardened a little, and Naruto grinned at her as the two of them fought. He blocked her ass with his chest, and pushed her back through leg power. She used her lighter body, and circled around him, slamming her tits into the side of his arm. She started to make more after images. She moved faster and faster until all that Naruto could see was her ass attacking him from all directions.

Thousand Barrier Hip!

"That's a Multi-Lateral Ass Attack... it looks like this is the end of the match for Naruto." Nagisa pointed out as the all out ass attack got closer to Naruto.

"Naruto!" Kushina shouted, cupping her hands together to make sure voice even louder. Naruto glanced towards her for a second, before his face become serious, losing the grin. Naruto looked at all of the asses coming at him as if they were moving in slow motion for half a second. Naruto closed his eyes.

...

"HAH!" Naruto shouted as he moved his own hip and slammed his butt into Jin's butt, and all of the asses around him vanished. Jin's movements stopped completely as the girl looked at him in utter shock.

Naruto's legs were shaking even harder than before.

"He stopped it..." Sakura said with worry when she saw the condition Naruto's legs were in. The more attacks that he took, the more damage his legs took as he took in more vibrations and more kinetic energy.

Jin moved back.

"Impossible... even some pros can't handle that kind of attack. You've got quite the cocky ass, don't you... What's your name?" Jin asked as she moved her hand and cupped her own ass. She glanced back at it and saw that she actually had a bruise that would form on her butt. She looked at Naruto, and saw that he was in worse condition. He was holding his gut and grunting, but he still grinned.

"Naruto Uzumaki... My Mom got me these tickets for my birthday... but I didn't think it would be this fun. Being on the land... fighting a strong opponent... the crowd watching with excitement." Naruto said as he looked around with a smile, a genuine smile. Jin stopped fighting and looked around as well.

The crowd had stopped their silence.

They were roaring with cheers now. They had forgotten that this was a warm up match, and got started to genuinely enjoy what they were watching. Even the TV crews that had taken a break had started up their equipment and were recording what was happening. Everyone was excited to see the "match" continue.

Naruto nearly lost his balance as he took a step to the right.

"He's no longer using that technique." Nagisa noted as she sighed.

'Something is different about him.' Jin noted when she saw Naruto stand up straight, his grin almost splitting his cheeks.

"My blood is boiling! My body hurts, my legs are killing me, and I'm more exhausted than if I ran a marathon, but DAMN if I'm not going to keep giving this my best!" Naruto shouted as he slammed his hands onto his knees. Jin tensed her own legs and moved towards Naruto, while Naruto took a calming breath.

Both were completely still.

Jin grinned.

"... She seems excited." Kushina said as everyone in the crowd came to a hush when the two on the land stopped moving.

"... Her ass has recognized his latent ass potential. Her breasts are trembling with excitement to see how far he is going to go..." Nagisa noticed the state of Jin's body as her small trembles were noticed by the more experienced woman.

Jiraiya grinned perversely.

"RAH!" Naruto shouted as he burst into action. He spun his body, and built up more energy inside of himself.

Nagisa's eyes widened.

She saw Naruto spin and move his legs across the land with recklace abandon. He spun and spiralled his body uniquely, in a way that she recognized.

"He is releasing all of the energy that his muscles have absorbed, and adding onto it. He subconsciously realized that he couldn't absorb and release energy at the same time... so instead of absorbing it, he is building it up." Nagisa spoke with her eyes widened when she saw the surprising development.

She couldn't ignore this.

"Spiralling... Hip... Sphere!" Naruto named his attack, and Jin rushed towards him at her absolute full speed. Naruto's attack missed when she moved to the left, but even moving to the side the left side of her swimsuit was ripped up. Her left breast was revealed by the shockwave of the attack as the water was split.

She moved to attack while Naruto was in a weakened state, and she knocked him into the air and off of the land.

He landed in the water.

'He's created a bastard Vacuum Ass Cannon with no experience...' Nagisa thought to herself as she leaned over the railing.

Naruto floated back to the water's surface, staring up at the sky with a grin on his face. He was panting, while Jin covered her breast and looked down at him.

'... That was almost like a Vacuum Ass Cannon... if that hit me directly, I would have been sent flying off the land.' Jin thought to herself as she looked at people swimming after Naruto... because he wasn't able to move his own body anymore. He was beaten and his body had taken too much damage.

She could see his eyes though.

She gave him a thumbs up, and the crowd went crazy with excitement. Naruto returned the thumbs up, and she smirked to herself as she turned away from him.

"I hope to see you on the land again. You gave my ass more than a warm up... get stronger, because next time I will go at you full force from the very beginning." Jin spoke loudly enough for everyone to pick her up. She glanced back at Naruto, and he was grinning at her.

'This is way better than watching.' Naruto grinned to himself as he closed his eyes.

He could understand why his mother wanted to be a Keijo player.

Chapter End!
Please Leave Me Lots Of Nice Long Reviews, But No Flames Please!

Did I say this would be harem? No, and honestly I never planned on it being a harem.
Naruto will have more close friends than he will romantic interests, but I'm not telling anyone who I decided for the pairing.
I'm going to let you have fun and try to guess.