(A/N: A quick thank you to dangerdoom for reminding me of the tai-jutsu styles. Remember if you find any mistakes of things you find wrong I don't mind you telling me. We work through mistakes to gain perfection.
-1I don't own Naruto
As the red chakra flowed from Naruto into Lee the medics began to work, cutting open Lee's back and searching for the bone fragments. Naruto struggled to maintain a steady flow of chakra, and he finally settled for constantly pushing more than was needed, counting on the Hokage and the medics to tone down the flow. The operation went swiftly and without mishap, and at the end Naruto collapsed to the floor, exhausted from using and trying to control that much of Kyuubi's chakra.
The next day Naruto and Gai went to visit Lee and discovered he was back to his usual self, ranting about the flames of youth and how he would do extra training to make up for the time he lost. Naruto quickly left when Gai and Lee began to hug each other crying out "Gai-sensei" "Lee." There are some things the human mind is not meant to handle. While Lee was recovering, Naruto and Gai continued working on the Goken style. Naruto was doing fairly well until he tried to learn how to open the celestial gates. As he opened the first one he felt the massive boost of chakra, power, and speed Gai had described. Then he felt the sinister chakra of the Kyuubi flood his system. "AAAAAARRRGGGGHHH" Naruto screamed. It felt like he was being shredded from the inside out. He lasted a moment longer before collapsing due to the pain. The chakra aura around him disappeared and Gai rushed him to the hospital. Naruto was found to be exhausted, but any damage he had taken the Kyuubi had already healed. Outside of Naruto's room, Gai and the Hokage spoke in low tones. When Gai explained what had happened the Hokage nodded and began to speak.
"Opening the gates not only sent a sudden surge of his own chakra through him, it also sent a flood of Kyuubi's chakra through him. His body can't handle that kind of power rushing through him so suddenly." Gai solemnly spoke "It seems he will never be able to learn Goken." When Naruto woke up, Gai informed him of this fact. Naruto was torn with conflicting emotions. Sad that he couldn't learn such a powerful style, and strangely, happiness. Naruto had never felt completely comfortable using the Goken, because he felt it was the commoner's equivalent of the Jyuuken. The Goken was Lee's style and Lee's style alone, and using it felt like cheating Lee out of the one thing he was good at. Naruto had very little time to ponder all of this, however, as he and Gai were summoned to the Hokage's tower. When they got there the Hokage assigned the two of them a mission to check up on Wave country and collect the rest of the payment owed for the mission to protect the bridge-builder. Only the two of them needed to go on it, with Lee still recovering and Neji training with his family. The two set off and arrived in wave country a few days later.
During the trip, Naruto had told Gai about the mission he had went on and how it had changed his view of being a ninja. When they got to wave country Naruto asked for some time alone to visit Haku and Zabuza's graves. When he got to the graves he saw a strange man kneeling in front of them. He had shoulder-length black hair and was wearing a brown shirt and gray pants. "What are you doing here?" Naruto calmly asked. The man turned around revealing striking black eyes. "I am the maker of the swords of the Seven Swordsman of the Mist. I am paying my respects to Zabuza." Why are you here?" the stranger asked, "I was at the battle where Zabuza was defeated." replied Naruto. Naruto then explained the whole story of the battle to the man. The man looked at Naruto, seeing honesty, courage, and integrity written on his features. He made a split second decision that would change Naruto's life forever. "Would you like me to make you a sword?" Naruto was stunned by the offer, but quickly recovered. "I would like that very much, but I don't want a sword as large as Zabuza's." "Very well, come with me." Naruto left a note that told Gai he was leaving for two weeks and he would return at the end of that time. Naruto didn't know what made him trust the man so easily, but he sensed the man was honorable.
When they got to the mans temporary workshop, he gave Naruto a sword and set him to practicing some basic sword routines while he worked. Four days later he emerged with a sword that was four and a half feet long, with a foot-long handle and a three and a half foot blade. The blade was straight and sharpened on both sides, about three inches wide at the base and maintaining that length most of the blade, narrowing at the end. The man held up the sword for Naruto to see, but he wouldn't let him touch it. "Before you take this blade, you have to realize something about it. The swords I forged are unique in that they take a person's elemental spirit and attributed it in the sword. Each person has a element they correspond with, be it Earth, Wind, Fire, Water, or Lightning. If you are heavily attributed to an animal, it will also take some characteristics from the animal and place it in the sword. You must perform a forbidden jutsu to seal some of your soul into the blade." With that he turned and walked back into the shop, motioning Naruto to follow him. He placed the sword in the middle of a seal and showed Naruto the hand seals for the technique. There were over forty of them, and if you did just one of them wrong, you would die. Naruto spent the next day practicing the hand seals and at sunset he felt he was ready to do the technique. There was no name for the technique, but it didn't really need one. Naruto performed the hand seals and slammed his palms down on the sword. There was a vortex of chakra, and a flash of light. When the light died down Naruto looked at the blade. "Whoa" was the only thing he could muster.
The blade was pure black, and had several downward facing notches on either side of the blade, making it look like a bolt of lightning. It was still three inches at the base, but the notches narrowed it until it reached the point. There were words on the hilt. When Naruto looked closely, he was able to discern the name of the sword: Raijin.