The beeping of a distant machine was the first thing that Naruto heard. He sat up, groaning in pain. The last thing he remembered was his clash with Sasuke in the Valley of the End, his Super Massive Rasenshuriken connecting with Sasuke's Susanoo arrow. He looked around the strange room that he now found himself in. The rooms were smooth and polished, unlike the rough wooden walls of Konohagakure. It was that he had been teleported somewhere. The question was, where?
He stood up. The first thing was to see if he had enough chakra to activate Six Paths Bijuu Mode*. However, when he tried it, he only managed to to activate Six Paths Sage Mode*. He would need to find time to recover his chakra.
His next task was to find out where he was. Judging by the sophistication of the building he was in, it had to be a hidden Village. Which one, though?
He opened the door to room, which led out into a hallway. The hallway walls were identical to the walls of the room. Naruto heard the same faint beeping from before. It was coming from somewhere to his left. With no other clues, he decided to investigate the sound.
The source of the noise was a room three doors down. When Naruto opened the door, he saw a group of weirdly-dressed people standing in a circle. They wore some kind of light blue clothing, made of a material Naruto had never seen. They each wore a matching cap and, from what Naruto could see, masks that covered the lower half of their faces. They didn't seem to notice him, but he didn't want to take any chances, so he crouched down and entered quietly.
The first thing that Naruto noticed was the machinery. There were machines all across the room, including one machine that was making the beeping noises that he had heard when he first woke up. The people were talking to each other in whispers, and they were using strange-looking tools. The place reminded Naruto of the Konohagakure Hospital, only this place seemed more... professional.
He noticed wires and tubes leading to the machines, so he followed them with his eyes to their source. They all led to the center table, where a girl lay, unconscious. From what he could see, the people were doctors who were operating on the girl. Naruto could tell from the tension in the room that it was serious. Then, he had an idea.
Naruto stood up and said, "Hey, how's it going?" The doctors all jumped at once, startled by the sudden materialization of the stranger in the room.
The nearest one, who Naruto assumed was in charge, asked, "How the hell did you get in here? The door was locked!"
Naruto looked at him, confused.
"Uh, no it wasn't. The door was unlocked, and I came in."
"You shouldn't be in here!" the doctor yelled. Naruto just smiled.
"Don't worry! I can fix this. There's something wrong with that girl, right? Well, I'll help her, and then I'll leave, alright?" The doctor looked at Naruto, confounded.
"Help her? How? The surgery's failing, and she's dying."
Naruto sighed.
"Just give me one chance," Naruto pleaded. "If that doesn't work, I'll leave. Please..."
The doctor sighed.
"I know this goes against every law and rule there is, but I'm out of options. I'll allow it."
Naruto smiled, and gave him a thumbs up.
"Alright, I got this!" He walked over to the table, the doctors making room for him. He looked at his right hand, the white sun standing out against his fair skin. He placed that hand on the girl, and closed his eyes. He didn't know where he was, so it was safer to just hide his powers as much as possible. With his eyes closed, he activated Six Paths Sage Mode. Right away, he was able to sense the problems with the girl. The nerves within her spine and brain had deteriorated**. Her heart had stopped beating, and she wasn't breathing. He also noticed something strange, but he didn't have time to think about it.
"Alright," he murmured to himself. Using his Yin-Yang Release, he repaired all of the damage in her body, and revived her. When he finished, he stepped away, and nodded to the doctor. The doctor looked at the machines.
"Oh my god," the doctor said, stunned. "Her heart's beating. She's...she's perfectly healthy!" He looked back at Naruto. "What did you do?" Naruto rubbed the back of his head and chuckled nervously.
"Uh, well, it's kinda hard to explain-" Naruto stopped. Had he just sensed... Sasuke's chakra? It was close by.
"I got to go!" He said quickly before running out of the room, leaving the doctors with too many questions unanswered.
POV: Arima Kousei
As he left the building, Arima felt relieved. He had been well-received in the first round, but he couldn't see himself performing well in his condition. He was scared. What if Kaori didn't make it through the surgery? And even then, what? She wouldn't live for that much longer afterwards. He checked his watch. It was about 4:50 pm, which meant that the surgery would be over soon. To rid himself of doubt, he decided to go to the hospital. If the worse had happened, he wanted to be alone when he learned it.
The walk to the hospital was a short one. When he got there, he sat in the waiting room for a doctor to see him. After about ten minutes, a nurse finally came and retrieved him, leading him to the doctor's room.
"It's good to see you again, Arima."
Arima nodded. "Doctor, how... how did the surgery go?"
The doctor smiled and said, "It went fine. In fact, it went more than fine." Arima was confused.
"What do you mean by 'more than fine'?"
"Well," the doctor said, "I can't really explained what happened, but it seems that Ms. Miyazano is perfectly healthy. Her ailment is gone, and she will live a long, happy life." Arima was stunned.
"But, wasn't her disease incurable? Wasn't she going to... die?" The doctor frowned.
"Yes, that was all correct. However, a young man suddenly appeared in the room, and did something to her that made her perfectly fine."
"What?" Arima asked, astonished. "Can you describe him for me? So that I can thank him, that's all."
"Oh," the doctor said nervously. "Sure. He was a bit taller than you, had blond hair, blue eyes, and was wearing an orange outfit. It was weird..."
Arima quickly thanked the doctor, and left. He didn't want to bother Kaori, who was most likely recovering from the surgery. He checked his watch and jumped.
"Oh, crap! It's almost 5:30! I'm going to be late for the lesson!" He began to sprint towards his house. When he arrived, an angry Nagi stood just outside of his front door.
"S-sorry, Nagi... I, uh, was just... getting something from the store, and lost track of time!" he lied. He laughed nervously, risking a look at the young girl.
"You didn't buy anything," Nagi said nonchalantly.
"Oh, uh, yeah... I-I..." Arima sighed. It was no use, he could tell.
Nagi grunted and walked back inside.
Arima reached for the door, but hesitated. The lesson would be a painful one, but also a good one. The fact that Kaori made it through the surgery and was going to be fine raised Arima's spirit.
...
After the lesson, Nagi and Mrs. Seto left, leaving Arima all alone. He let his mind wander, his hands instinctively moving to the piano keys. How would he find the strange kid? He had to thank him; without the kid's help, Kaori would probably be dead. The doctor had said that the kid had blond hair and blue eyes; that definitely narrowed it down. He was also wearing orange clothing, but he might have changed out of them. If only he knew more about the person, then maybe...
A knock at the door startled Arima. He stood up from the bench and walked over to it. When he opened it, a strange kid stood in front of him. He had black, messy hair, and he wore a pale, blue jacket. A weird-looking rope belt was tied around his waist, and at his hip, he wore a sheathed sword. It frightened Arima.
"Um, how can I, uh, help you?" Arima asked nervously.
"Have you seen a blond-haired boy?" the kid asked. "He's wearing an orange and black outfit." Arima gasped. Why was this kid looking for the same person as Arima was.
"Uh, no, I haven't... sorry..."
The kid sighed in frustration, and left without saying anything. When he had turned the corner, Arima sighed in relief and sat down, leaning against the wall. Something weird was going on. First, a stranger cures an incurable disease and saves his friend, and then another stranger asks him if he's seen the first one. It couldn't be a coincidence. Arima decided to follow the stranger, hoping to meet the one who saved Kaori.
He followed the stranger a few blocks, until they were on main street. He crept close enough to hear what the stranger was saying.
"...he'll sense me and come. We'll fight it out right here." What? Arima was confused. They were going to fight? In the middle of town? Was this really happening? It couldn't be; it must be a dream. All of a sudden, the blond-haired kid appeared two blocks away. The stranger smiled, his plan successful. Arima began to tremble as the kid approached the stranger.
"So," the stranger said, "you came. I thought you would."
"Come on, Sasuke," the kid pleaded. "Let's take this out of the city. I don't want to hurt anyone." Sasuke began to laugh diabolically, the onlookers staring at him weirdly.
"No way," he answered. "We'll finish this here and now, Naruto." With that, Sasuke drew his sword and dashed towards Naruto.
POV: Uzumaki Naruto
Here he comes...
Almost...
There!
He sidestepped Sasuke's attack, landing a punch on Sasuke in the process. Sasuke answered Naruto with his own punch. It connected with Naruto's side, and Naruto could feel ribs breaking. All of a sudden, Naruto felt a sharp pain as Sasuke's sword drove through his right forearm. They both leapt away from each other. Naruto could barely breath; every breath was painful.
I can't use Six Paths Bijuu Mode here, Naruto reasoned. I also can't use a jutsu that would damage the buildings. That means there's only one option...
He painfully moved his hands into a cross-shaped hand sign in front of him. Two shadow clones appeared in puffs of smoke. He held both hands behind him, and the clones began forming rasengans. As he did that, Sasuke formed an onyx chidori in his left hand, and charged at Naruto again.
Just a little more time... Naruto pleaded. Almost there...
The rasengans were ready just in time, and Naruto moved them until they were directly in front of him. The chidori and rasengans connected, and both combatants were blown away from the clash. Naruto landed on a nearby car, while Sasuke slammed into a stop sign. Naruto groaned as he tried to sit up. He was bleeding from multiple cuts, not to mention the broken ribs and injured arm. He lifted his head to look at Sasuke, who had already recovered. Sasuke laughed maniacally, and Susanoo began to form.
Shit! What do I do... Naruto grasped at straws. I need to lead him out of the city as quickly as possible. That way, the damage won't be as extensive. He stood up from where he was, activating Six Paths Bijuu Mode while he did so. He used one of his truth-seeking balls to form a platform, on which he began to head towards the edge of the city. As he had predicted, Sasuke followed him.
He made it within two blocks of of the city line, where Sasuke finally caught up to him. Now that they were away from the city center, Naruto created three more shadow clones, and sent them out to evacuate the people in the surrounding buildings and streets. He dodged Sasuke's punch, and summoned Kurama's chakra construct.
"Alright, let's do this, Sasuke!" he yelled. Sasuke swung susanoo's blade at Naruto, but Kurama caught it with his tails. While susanoo was trapped, Kurama shot a Tailed Beast Ball at it, hitting susanoo directly in the face. Susanoo shot an arrow up into the air, and then disappeared. Naruto looked up to see that Sasuke had traded places with the arrow, but was too late to stop him. Sasuke's Amaterasu started to burn away Kurama, and his chakra construct disappeared. Naruto floated to the ground, safe for now. When the shadow clones desummoned, he knew that the civilians were all evacuated. Now, he could finally fight at full strength.
"Sorry about this, Kurama," he said. "I need you one more time." He summoned Kurama once again, and created two Kurama chakra clones. They combined to form form the three-faced, six-armed Buddha mode***.
Alright, Naruto thought. It's safe to use it. The construct's three right arms began to form a Ultra-Big Ball Rasenshuriken, while the left three formed a Tailed Beast Ball Rasenshuriken. Sasuke laughed.
"Come on, Naruto! This again? This is getting boring. I'll just kill you right now, and find my way back to Konohagakure." He began to draw back his crossbow, Indra's arrow loaded. Sasuke shot his arrow while Naruto was still making the two rasenshuriken. When he had finished, he sensed a small presence behind him. He looked to see a kid about his age standing in the street, mouth wide open. Oh shit! thought Naruto as Sasuke's arrow found its target.
So, I decided to do this crossover so that you guys could, if you wanted, read this along with ALFP. However, reading ALFP isn't needed to read this, so people who don't want to read ALFP don't have to in order to read this.
*There is no official name for this form, so I called it this so that you can distinguish it from Six Paths Sage Mode.
**Speaking of Six Paths Sage Mode, that term refers to him without the Bijuu chakra mode.
***Again, there is no official name so far for the three-faced Kurama chakra construct that Naruto uses in his battle with Sasuke, but i have heard it referred to as Buddha mode (because that is what it is based on), so I will be calling it that.