Digimon: Naruto's Adventure

*Disclaimer: The following is a non-profit fan based story.
Naruto is the property of Masashi Kishimoto and TV tokyo.
Digimon is the property of Akiyoshi Hongo and Fuji TV.
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Chapter 1
Welcome to the Digital World

The two figures fighting dropped to a knee. They stayed that way and stared at each other, both trying to determine what to do next. The first boy, around six-teen years old, had black hair that was sticking out in the back. The front was a mess as two thick bangs framed his face. His once dark gray shirt now worn as rags for the garment was in several pieces on his upper torso. A pair of black pants held up by a thick purple rope, on his back inside the purple rope was a scabbard for his ninja-to. Which he was using as a way to hold himself up, he was breathing hard as he stared at the boy that was several yards away from him. This was Sasuke Uchiha.

The other boy was about the same age, around six-teen years old. Spiky blonde hair stood out everywhere. The hair was being held in check by a black head band, with a metal plate attached to the cloth. The plate covered his forehead; it also had the symbol for the hidden leaf village etched into the metal. His long sleeve jacket was better off than the other boy's shirt; the black and orange garment had only a few tears in the material. There was also a fist sized hole in the right chest area; the wound brought a sense of déjà vu when it occurred. His orange shinobi pants didn't have any tears in them either. He too was kneeling, staring intently at the other boy, and breathing hard. This was Naruto Uzumaki.

They were both breathing hard, and for good reason too. The battle they had was a fierce one, the only other battle that could be compared to it, was the one fought between Hashirama Senju and Madara Uchiha. Although the battle between the two shinobi of legend created the Valley of the End, the battle between the two teens destroyed it. The place was in complete dismay; the once great valley was now nothing more than ruins. The trees around the valley were either gone, or still being burned by black fire.

When the battle had started, the two met on the heads of the statues of Hashirama Senju and Madara Uchiha. No words were exchanged, they didn't need to be. The long awaited battle did the talking for them. It started out as an exchanged of taijutsu, then slowly went to ninjutsu. Sasuke had activated his Sharingan at some point. Naruto had went into sage mode at the same time, thanks to a clone that was hidden away to absorb the nature chakra. Sasuke soon switched to his Mangekyo Sharingan, he thought he had the upper hand. That is until Naruto went into his Kyuubi chakra cloak mode.

This proved too much for the Uchiha to handle, so he switched to his Eternal Mangekyo Sharingan. The powers seemed to be evenly matched, so Sasuke brought out his Sussano'o. At first he thought he had the upper hand, until Naruto went into his Bijuu cloak mode. Then the power seemed to be evenly matched once again. Naruto being faster than what Sasuke could keep up with. Sasuke being more powerful than what Naruto could endure. The battle took yet another turn when Sasuke was able to unlock Perfect Sussano'o. He thought he had Naruto beat, until the blonde had grown to match the size of the Perfect Sussano'o. Naruto then stood in the head of a gigantic nine tailed fox; the powers seemed to be matched once again.

They had unleashed attack after attack on each other, each attack was strong, even devastating. Some hit their target; others were either dodged or deflected. Thus causing the leveling of the once great valley, so now, here they stood; both only really having enough chakra for one more attack. Sasuke let go of his sword, the lighting started to form in his hand as he made his signature jutsu. Naruto had a clone help him form a ball of swirling chakra in his hand, creating his own signature jutsu. They both stood up, flashes of their past together as team seven flashed in their minds. Their legs were tensed as they ready themselves to take off at any moment. Then, as if someone had said 'go,' the two ran towards each other attacks held ready to strike as they went in. Naruto looked at Sasuke, once again seeing flashes of his ex-friend flash in his mind's eye. Sasuke too saw flashes of the blonde form rapidly within his own minds eye.

Then the attacks connected, the energy given off by the two devastating attacks was enough to cause even more damage to the Valley. When the smoke had cleared, only the prone dying form of Sasuke Uchiha laid in the valley. It was at this that a short pink haired kunoichi dressed in the average Jonin outfit came in. When she saw the form of her ex-teammate, her heart skipped a beat. She looked around as she went to the prone form of the Uchiha. Sakura Haruno could not see her blonde hair teammate anywhere. When she got to Sasuke's body and started checking him, she knew there was nothing she could do to save him. She may be the best medical ninja in the elemental nations, and just as good if not surpassing Tsunade Senju. There was nothing she could do to save the boy, as the tears started to fall, they increased when she tried, in vain, to locate Naruto.

This is when her ex-sensei Kakashi Hatake, came in. He stood beside her; after he noticed the state of the Uchiha he tried to locate the blonde ninja. All he saw was the destruction of the valley, the destroyed waterfall and statues. Also seeing the state the trees were in. He only sensed the Kyuubi's chakra floating in the air, already starting to reform. If the Kyuubi's chakra was released, then… he hung his head when the thought of him losing both his students crossed his mind.

"Kakashi-sensei, I" her voice caught in a choke, she tried to form words. When she found her voice she tried her statement again, "I can't locate Naruto."

The silver haired Jonin hung his head; he didn't want to tell his pink haired student this. "I'm afraid we have to assume the worst, Sakura."

That's when her head fell into her hands as she cried out. Naruto's words when he and the Uchiha last met held true. "If you and I fight, then we both are going to die." She didn't want to accept it, but it seemed like the statement came true.

XxX

Naruto wasn't dead, but he wasn't in his world either, strange yes, but it's the truth. The boy floated there in darkness, as five shadowed figures appeared around him. "Fanglonmon, why did you bring another human to our world?" A powerful voice from one of the five figures called.

"Zhuqiaomon, why do you always feel the need to question what I do?" Another, even more powerful voice announced. This one coming from the biggest shadowed figure.

"Why did you bring another human, I thought you would only choose eight children." A different voice asked as he too observed the blonde haired human that was floating in the darkness.

"Well, Azulongmon, my friend, with the rise of the Dark Masters coming I believe this boy will be the added bonus we will need. Especially if we want to defeat the growing threat of Apoclymon." The most powerful voice stated.

"Isn't he a bit older than the others?" Azulongmon asked the deity of the digital world trying not to sound out of line.

"That is true, but I plan on fixing that." He answered, but another question came up.

"What about a digimon partner for the boy?" Azulongmon seemed to have a lot of questions for the god of the digital world.

"Well, I believe there is one digimon who may be able to fill the role of his partner." He answered.

"This is outrageous." Zhuqiaomon roared.

"Silence! Or I'll send you back to your baby form!" Fanglonmon roared back at the defiant sovereign. "What I decide to do or don't do are up to me, if I want your input I will ask."

The leader of the south shrank back. "Now on to the task at hand." Fanglonmon began to concentrate his energy and focus on fixing the boys age. The blonde will still have the knowledge of his world, but he will also have the needed knowledge of real world and digital world. At least what was needed to be known. Sure the boys head will feel ten times larger, but that's the price to pay for the knowledge he will be gaining. It will take a while before all the knowledge sets in, but when it does, he will know all that he needs to on both the digital world, and the real world. Creating a digivice for him was an easy task; the hard task was creating a unique crest for the boy. To do so he had to take away the boys ability to use this 'chakra' in order to do so. It was needed in order to create the crest for the younger blonde boy. When it was all done, the boy looked the same, he still had the spiky blonde hair and whisker marked cheeks. However the boy was young, at least half his original age. He now matches the age of the bearers of light and hope. The godly digimon was breathing hard once he was done, he soon sent the boy off to the digital world, along with his digivice and seemingly empty crest locket. Once he arrives, he will meet his new partner. "Good luck Naruto, digidestine of determination."

XxX

When Naruto opened his blue eyes, he wishes he didn't. The sun was so bright, it made his throbbing head hurt worse than it already did. 'What happened?' He thought in his aching head, his eyes were closed as he sat up. His body was burning all over and his very bones ached. Then flashes of his battle with his ex-rival began to spur in his mind. 'That's right; me and the bastard were fighting.' He wondered if he was the only one to survive. When his head wasn't hurting so much, he slowly opened his eyes. He blinked away the tears, as his eyes adjusted to the light; he was in an unfamiliar area.

He stood up and looked around the area, scanning for any kind of enemy attack. For a second he thought he was in a genjutsu cast by his ex-friend. However, with a quick try at releasing it, the scene never changed. 'Always was bad at genjutsu.' He then bit hard on his thumb, wincing at the pain. The scene still never changed, so either he was in a very powerful genjutsu or this was real. When he looked down at the ground, he found it to be closer then he remembered. Almost as if he were kneeling, but he knew he was standing on his feet. He also saw that his feet were smaller too, when he looked at his hands, he found them to be smaller.

He saw a large patch of water, so he went over to it. When he did he saw the reflection of his eight year old self staring back at him. He also noticed his change in clothes. In place of his orange and black jacket, was now an orange shirt, with a black silhouette of a wasp on the chest. He also saw hanging around his neck was a pair of orange rimmed blue tinted goggles, with a black stretchy strap. Underneath the goggles was some kind of weird necklace. Blue shorts with many pockets in them, held up with a black belt. Orange and blue slip on shoes was on his feet as well as white socks. Around his wrists were orange wrist bands with a black spider web like design on them.

"What the hell?" He noticed that his voice was higher pitched, the same voice he had when he was eight years old. "What the hell is going on here?" He asked a little more loudly this time.

"Hey are you okay?" a childlike voice called out, it sounded like it was said by a young child with a stuffy nose. Naruto whirled around to see a bug looking creature. A purple mouth that seemed like pincers on its face. Two small antennae on its head along with some kind of twig looking thing sticking out of the top of his head. Two little arms stuck out of a spiky brown cocoon like body.

"What the hell are you?" Naruto asked, his hand automatically going to his weapons pouch, but finding nothing there. "What do you want?" Naruto was defenseless, and he didn't like it one bit.

"Easy Naruto, it's okay, I'm Minomon." The creature now known as Minomon stated waving his small arms in a calming matter.

"How do you know my name?" The question was valid, the creature attempted to smile the best it could.

"That's easy; I have been waiting for you forever. I'm your digimon partner." Naruto looked confused.

"Digi-what, my what?"

"Digimon, its short for Digital Monster." The digimon tried again to smile but only succeeding in making his eyes seem like upside down U's. "Now you and I are partners."

Naruto was still confused, "We're partners, like teammates?" The digimon nodded, "okay, I think I understand now, uh, Minomon was it?" A nod from the digimon, "okay, so Minomon, where exactly am I?"

"Another easy one, the digiworld, short for Digital World."

"Digiworld, how did I get here?" The name seemed familiar, like he knew it from somewhere. When he tried to think of where, his head throbbed.

"Uh, that one's a hard one, anymore easy ones?" The digimon seemed upset he couldn't answer one of his partner's questions.

"Okay, why am I here?" Naruto rubbed his temples trying in vain to get the headache to pass.

"Oh, I know that one, your here to help save the digital world." Minomon was happy again that he knew the answer.

"Save it from what?" Naruto asked when the pain in his head subsided.

"Uh, I don't know, I just know that it needs to be saved." The digimon seemed upset again.

"Hey it's okay buddy, if you can't answer its fine, whatever you can't answer we'll find the answer together, okay?" This seemed to help cheer up the digimon, and give him more confidence. "Okay, do you know who brought me here?" A shake of the head, "okay, that's fine we'll find out eventually." He then noticed something attached to his belt. "Huh, what's this?" He held up the square shaped device.

"Oh, I know," he pointed one of his small hands towards the device, "that's a digivice; it is what helps me to digivolve."

"What's that 'digivolve'?" Naruto's head hurt once again, he felt as though he knew the answer, but when he tried to think his head throbbed.

"That's where I grow to the next stage, right now I'm in my in-training stage, next would be my rookie stage." Naruto nodded at that as the pain in his head subsided again.

"Makes about as much sense as anything else around here." He rubbed his temples as he looked around. He then noticed something off in the distance. "What's that thing over there?" Naruto and Minomon observed a slowly forming mountain. It was strange; it was unlike anything the blonde has ever seen. From what he could tell, which wasn't much due to it not being fully formed, it was made up of three different landscapes. A forest, an ocean, and a desert; it looked as though it was growing little by little. He didn't know how tall it was supposed to be, but if it kept growing, it was going to be the biggest mountain he has ever seen.

"It's supposed to be Spiral Mountain." An old voice said Naruto turned to investigate the new voice. When he did he saw a very old man, wearing a purple and pink outfit, a strange outfit in fact. He couldn't see the man's eyes due to his large bushy gray eyebrows. A gray mustache along with a gray beard hid away his mouth.

"Who are you old man?" Naruto asked the short old guy.

"My name is Gennai." The old man answered as he walked up to the blonde and his digimon. "And you are Naruto correct?" The young boy hesitantly nodded, the thought of how everyone knew his name running through his mind. Gennai then turned his gaze to the small insect digimon, "you're his digimon partner, Minomon?" The digimon nodded happily. "Well, I'm sure you have many questions, if you come with me I'll be happy to answer what I can." Naruto looked to his partner, as if checking to see if this guy was safe, the digimon nodded. So Naruto took hold of Minomon, and followed the old man to get the answers he wanted.

XxX

"Okay, so let me get this straight," Naruto started setting down the cup of tea he had, his digimon partner was happily munching away at some food provided to him. They were in some secret location that hid Gennai's house from enemies. "For starters, I was brought here by some deity of your world?" A nod of confirmation from the geezer, "and I was brought here to save it."

"Well to help save it, that is." Gennai corrected.

"Oh, right, there are others, where did you say they were again?" Naruto looked to Gennai.

"They are back in the real world, trying to locate the eighth child as well as trying to defeat Myotismon and his minions."

"Right, right," Naruto began to ponder a bit, but then shook his head. "Okay, well I somehow still have all my knowledge from my world, according to you the knowledge of this 'real world' and the digital world. I no longer have Kurama sealed in me; I have no way of using chakra. Finally, I have no way to go home until this world is saved." The old guy nodded, "well that sucks. Anyway, I can't talk to the sovereigns on account that they were sealed away by these 'Dark Masters' shortly after bringing me here?" Another nod from Gennai, "So, if I want answers on how to get back home, I got to help defeat these 'Dark Masters' and save the digital world."Naruto looked down for a moment, thinking over his situation, "okay, the sooner we save the world, the sooner I can go home."

"You have to stay here until the information sets in." Gennai stated.

"Oh, that's right. The information of the two worlds takes a while to sink in." After saying the thought he rubbed his head once again. "Well, while I wait I can at least try practicing my taijutsu; at least I can still do that." It's true, he still had the knowledge of his taijutsu style, but he would have to practice at it to get his younger body used to the style.

"What's 'taijutsu'?" Minomon questioned when he didn't have food in his mouth.

"It's a way of fighting hand to hand." Naruto explained to the small curious digimon.

"You think you can teach me? It might help me digivolve." Minomon had hope in his eyes.

"I don't know, maybe after you digivolve." Naruto stated.

"The key to digivolution is the bond between the two of you." Gennai stated to the two partners. "As well as gaining experience and strength through battle. The tougher the enemy that you overcome, the stronger you will be because of it." Naruto and Minomon nodded together, taking the old man's advice to heart.

Naruto stood up, "okay, well Minomon, what say we go to bed and get some rest, okay?" Minomon nodded and jumped into the blondes arms. Naruto laughed a bit at this. He turned to head to one of the vacant rooms in the house.

"Wait, there is one more thing Naruto." the blonde turned around. "You need to unlock the power of your crest, how is a mystery that can only be solved by you." Naruto looked down to the small locket like device around his neck.

"Where is my crest anyway?" Naruto asked staring at the empty space.

"It shall appear when the time arises." Naruto scrunched his face at this.

"Okay, well can you tell me what it is then?" Naruto asked.

"It defines your very essence." Gennai stated vaguely.

'Great more riddles, what is with every old guy using riddles?' He had no answer to the self-asked question. He waved a good-night to the old guy, "well thanks for telling me what's going on, I'll see you in the morning." After the exchanged of 'good-nights', he and his digimon partner went off to bed to get some much needed rest. After all they had a long journey ahead of them when they are ready.

XxX

The first thing Naruto noticed when he woke up, was extra weight on his chest, now last he checked Minomon, who doesn't weigh much, was asleep in that area. When he opened his eyes to look at his partner, he was shocked to see a different creature on him. "Ahh!" He shouted and sat up throwing the new creature off of him, "who the hell are you? What did you do with Minomon?" The creature opened its eyes revealing blue orbs, almost as blue as Naruto's.

"Ow," the creature sounded like his voice was deeper, but it still had a stuffy nose sound to it. "Huh, Naruto, what's wrong?"

"Minomon?" Naruto asked, shock still being on his face.

"Well, yes and no, I think I digivolved in my sleep." Naruto's eyes widen at that, "I'm Wormmon now."

"Wormmon?" Naruto was still a bit shocked.

"Yeah, I'm in my rookie form." now Naruto smiled as he observed his partners new form. He looked like an overgrown green caterpillar, only without the fuzz. He still had the purple pincer like mouth, now he had several stubs for legs with purple points to them. On his rear were two thin purple spikes and a black ring going around his rear area. His green antennae were a bit longer, and some kind of purple mark on his forehead. It was like a V with a type of comma or something on either side.

"That's awesome, buddy, we'll have the digiworld saved in no time at this rate." Naruto answered ecclesiastically, not being as freaked out as before. He got out of the bed and stretched, and then he immediately dropped to the floor and started doing push-ups.

"What are you doing?" Wormmon asked staring at his new partner.

"Push-ups." The young blonde answered flatly.

"Why?" Wormmon crawled to face Naruto.

Naruto stopped his exercise to face his partner, "to develop strength in my arms."

"Why?" Wormmon asked which caused Naruto to stop once again.

"It helps with my taijutsu." Naruto begin to do the push-ups again.

"Oh," Wormmon looked away for a bit, then back at the blonde, "can I do them to?"

"Why?" Naruto breathed out as he kept doing his exercise.

"Well, to get stronger." Wormmon answered a bit uncertain.

"Well," Naruto paused for a moment, "I don't think you could do push-ups." Naruto saw Wormmon's depressed look, "however, you could climb up the wall. Then try to stick and stay to the ceiling." Naruto supplied a type of exercise.

"Will it help me get stronger?" Wormmon had hope in his digital blue eyes.

"Probably." Naruto answered.

Wormmon crawled over to a wall and begun to climb up it, Naruto watched as he switched from push-ups to sit-ups. Wormmon got to the ceiling and struggled to stay put, soon gravity won the battle and Wormmon fell to the floor. "You okay?" Naruto asked, stopping his new exercise, he was ready to get up if the digimon needed help.

"Yeah, I'll probably get worst from the Dark Masters." Naruto nodded at that. It was most likely- the truth, he doubted the possibility of the Dark Masters being merciful. He's seen plenty of that in his old world.

"Yeah," Naruto started back with his exercise, Wormmon watched, his eyes following the blonde as he sat up and then went back down then up. "Hey, why don't you try again, only do it over the bed. That way you have a soft landing in case you fall again."

"Okay," Wormmon hopped on the bed and climbed up the wall that was next to it. When he got to the ceiling he was struggling again. Soon he fell, but this time his landing was cushioned by the bed. Wormmon got back on the wall and tried again.

Naruto watched him for a second, admiring his digimon's determination to get stronger to help save the digital world. Naruto soon switched from sit-ups to squats, and then came an exercise called mountain climbers. It was where you have your hands on the ground and feet out, like your about to do a push-up. However, instead of push-ups, Naruto was kicking his legs one at a time, as if he were climbing a mountain. He knew these exercises, and others, because he trained with Rock Lee, a friend of his who was a master at taijutsu and hard work. He was glad too, because without him being able to mold and use chakra, he needed something to give him an edge in this new world. So he opted to practice his taijutsu, only doing it in a way that would make his friend, Lee, proud. Only he would have to probably use rocks in place of weights. Once he figures out how to do so, but that could wait till later today.

Naruto's head still hurts, only not as bad as when he first came to this world. It was still a dull pain in his head. So, instead of sitting around to wait for his head to stop hurting, he opted to practice his taijutsu and do some strength increasing exercises. Some he would have to do to the best of his ability. Once he was done with the morning exercises that would soon be his morning routine, he stood up and faced Wormmon. "How you doing?" He saw that the digimon was struggling to stay attached to the vertical surface.

"I-" when he tried to talk, he lost his hold on the ceiling, "almost had it." He sighed defeated.

"Hey, cheer up, the point of the exercise is to try and stick to the ceiling for as long as you can. Your time should increase after a while, just keep at it." Naruto smiled reassuringly, "plus, it's a buildup to another exercise, sticking to the ceiling and walking around. Then running upside down, once you accomplish that you'll be a bit stronger." Wormmon seemed to pale.

"How do you know all these exercises?" Wormmon was baffled.

"Well, where I come from, all I did was train and fight. So I know a few things, plus with the way you stick to the surface, it reminds me of the chakra control exercises I used to do." Naruto began to muse at his training under the old pervert. He still developed a small pain in his heart thinking about his old mentor.

"Do you think you could tell me about your old world?" Naruto considered Wormmon's request.

"Okay, I'll tell you a bit every now and then." Wormmon nodded, "okay, let's head out and run around the house. This will help our legs get more strength."

"I don't know if I could..." Wormmon trailed off.

"Sure you can, you got energy left in ya to talk, you got energy to run. Come on let's go." Wormmon sighed as he followed his 'Drill Sargent' of a partner to the outside.

Gennai watched as the blonde boy and his digimon ran around his home. 'Strange choice in a human, Lord Fanglonmon, but I can see why you picked him though.' He studied the blonde for a bit, he could see that he was struggling to continue. Even though he was struggling, he never gave up until he reached his desired number of laps around the house. His digimon was just as determined as his partner. Gennai pondered for a bit on whether he should tell the blonde what his crest was, but he shook his head at the thought. 'It's more fun when they unlocked it themselves.' He chuckled a bit; he couldn't wait to see the look on the young blondes face. When he saw the blonde was done, he called out to him, "if you're interested, breakfast is ready." Somehow the two found a new source of energy, for they ran to the house. Gennai couldn't help but chuckle.

This had come there daily routine in the morning. In the afternoons, Naruto would work on his taijutsu; he even managed to make weights for himself and Wormmon. He had to use some big leaves and some strong adhesive to make them, but it worked out in the end. So they trained all day, with the homemade weights on. Running, jumping, hopping around the tree branches, anything that could help them grow even a little bit stronger.

When he would lie down at night, he would wonder why he was working so hard. Did he really want to save this world, or did he just want to go home? He would often wonder that when he laid down to rest. Why was he doing this? He couldn't find the answer. Then a thought would always come to him, what if he couldn't go back? What would he do then? Go to this 'real world'? Then do what exactly? He didn't have an answer for that question. It wasn't one that he wanted to overly ponder. Then he would look at Wormmon, his new and first friend of this world. What would Wormmon do if he were to go back to his world? Would he miss him? Probably, Naruto knew that he would miss his new teammate, as he saw him.

He would then switch his thinking to what to do when he left Gennai's house. These questions were; where to start? What to do? And how to defeat these Dark Masters? He wished he had the answers for that last one. As to where to start, he and his digimon partner would head to Spiral Mountain. Then try and delay the Dark Masters take over for as long as possible. Just long enough until the other digidestine showed up. With that thought, he would then find sleep, and then the next day would be the same routine. Wake up, do morning workout, run a few laps around the house, eat breakfast, work on his taijutsu, run some more, do more exorcises and work outs, eat, got to sleep, then wake up and do it all over again. Just until he was ready to go off and fight the Dark Masters.

(A/N: Hello and salutations my friends. I hope you enjoyed this first chapter. I have been wanting to do this story for as long as I wanted to do NPJ. The reason why I haven't released it sooner is that it was missing the passion that I have for NPJ. That and a good plot. While I'm not too fond of the first adventure, I absolutly love the second adventure of digimon. I wanted to do one of Naruto in adventure 02, but I feel like I need a build for it. So he is in adventure 01 around the time of the Dark Masters. I know the time era has been done before, but just wait till chapter two and you'll see how different it is. The reason why I didn't give Naruto the ability to use chakra is because I feel like he would be a bit god like in the digital world, even if he is de-aged. So I give a reason for it being taken away, and you will read about the design of the crest of determination. But that won't be for a while though, just have patients and enjoy the ride. Also the fight at the beginning with Naruto and Sasuke, that's what I picture the fight would be like based on what we know now from the manga. Well hope you enjoyed it, I already have chapter two done it's just in the editing stage. So it won't be long for that, just a while for chapter three. Well ttfn. Ta ta for now. )