Triggers: Gender Dysphoria, transphobia

I don't own Naruto, and am just writing for fun.

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Chapter 1: trading techniques

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It was the day after Team 7 had returned from the fiasco that was the Wave Mission, they had been given a week off after the debrief that morning, once outside of the Hokage Tower Sasuke, after turning Sakura's offer of a date down and her sulking off, held naruto up, "Dobe, I need to talk to you, it involves training."

The magic word caught Naruto's attention. A week without training was like hell for him, especially since the only reason he survived his last fight was because he had a demon in his gut and the enemy had a soft heart. "I was going to go get ramen, c'mon and we can chat at Ichiraku's."

Sighing, "I suppose we can run by there first Naruto, let's talk on the way." naruto set a fairly brisk pace and Sasuke followed, "I want to share Jutsu, if you let me copy your strongest Jutsu, I'll teach you the Grand Fireball Technique, which is the potentially strongest one I know. I-I am struggling with the fact that you had to save me, I swore on that night that I would never survive only by the kindness of enemies again, and that's just what happened in Wave. What I've been doing up until now hasn't gotten me strong enough fast enough, so I'm trying something new, you avenged me, or at least would have had I died. To someone like me, that means a lot."

"I think that's the most I have ever heard you say at one time, ever. And Hell yeah! I'll teach you the move I used to take down Hokage-Jiji, Dattebayo!"

"You took down the Hokage? Bullshit."

"No, really, Sasuke, the night after the final exam, some stuff I'm not allowed to talk about happened and I knocked out the Hokage in the process of getting access to the shadow clone technique. Jiji said that it was way too powerful and should be sealed, but I wouldn't let him, claimed it was a clan technique. So I can share it, but only I have the right to teach it to others and nobody can force me to teach it to somebody else."

The duo arrived at the famous ramen stand and each ordered a bowl, well naruto ordered 3, and then made their way to the Uchiha clan compound at the edge of the village. Working their way through the, nearly, abandoned area they came upon a small lake with a pier that jutted out towards the center.

"Alright, Naruto, since I want to be able to practice in peace after we share techniques, I'll teach you the grand fireball technique first. For that we need to use the pond, it's where every Uchiha learned to do it. That way I don't have to worry about you burning my house down. You need to take a deep breath in and gather chakra into your lungs, while holding your breath, then perform the hand-seals snake, ram, monkey, boar, horse, tiger, then expel the air from your lungs as powerfully as possible, you'll spit out a fireball whose size is directly influenced by how much chakra you gathered, if you continue feeding chakra into your breath you can create a flamethrower effect instead of a fireball."

Naruto had been clinging to every word Sasuke said. He desperately wanted to learn more techniques, and he was determined to show that he wasn't the dobe that Sasuke thought him to be. With a single-minded focus that he rarely employed Naruto memorized the instructions. He asked, "How much chakra should I put into it?"

Sasuke thought for a moment, "Hmm, normally I'd say 'as much as you safely can' but given your, frankly ridiculous, stamina I'd say put about as much in one as you use for 7 replacement techniques, that should be a good amount to start with and you can ramp it up if you need to. Now, I'll go through the hand-seals a few times and I want you to copy me exactly, so that I know you have it down well enough that you won't injure yourself or, more importantly, me." Naruto growled at the slight, but studiously copied Sasuke's movements as well as he could as Sasuke went through them slowly.

Alright, Naruto, you aren't copying exactly, but I think you're close enough to try safely, remember not to overload it, I know that was a major problem for you in the academy.

Naruto had his resolve face on as he turned to the lake from the end of the pier. He shouted "Grand Fireball Technique!" sucked in as much air as he could and went through the proper hand-seals, slowly. Once he formed the tiger seal, he dropped his hands down and slightly behind himself to avoid burning them and blew out all the air and chakra he had held in his lungs. The fireball that flew out from his mouth was pitiful, only about the size of a balloon.

Seeing the disappointed look on Naruto's face, and wanting to get to his own training as swiftly as he could, Sasuke commented, "That's actually a lot better than I expected, Naruto, I thought you'd flub it for a while before being able to even get enough of a flame to light a candle. Maybe there's some hope for you, yet. You've got everything you need to master the technique, now, you just need to practice, but you might want to look elsewhere for more elemental techniques, it's pretty obvious that you aren't fire natured."

"Fire natured?"

"Seriously? The five basic elements, fire, wind, lightning, earth, water. Everyone has an inclination to at least one of the elements. Some families are inclined to have two or more, as an Uchiha I have a fire secondary affinity. My primary affinity is lightning, and is much stronger than my fire nature."

Naruto crowed, "That's so cool! I bet I have water or something that weakens fire and that's why I did so terribly. How do you test for it?"

Sasuke replied, "There's a few different ways, learn a technique that is roughly the same level for each of the elements and figure out which one is the easiest, that's the most time intensive, you could get some chakra paper that will tell you, but that one is really expensive, or you could find out what your mother's chakra nature was, as chakra nature is determined by mitochondrial DNA."

"Mito-what?"

"After this just go see if the hokage can tell you what your mother's chakra nature was. Now, can I copy that move?"

"Yeah, Sure Sasuke! Ok, the only seal for it is the ram." Naruto waited for Sasuke to activate his Sharingan and copy his pose, then both shouted "Sexy technique!"

In their places stood a buxom blonde and a lithe ebon-haired beauty, both without a stitch on them. Sasuke was frozen for but a second before he canceled his usage of the technique, "NA-RU-TO! That's such a worthless technique. Why would you even use that against the Hokage in the first place, I'm sure it wouldn't affect such a dignified man as he, plus it's not like you're using it against some kissless virgin, the man has to have known a woman before, he has kids and grandkids."

Naruto, who had yet to drop his technique, scratched the back of her head, "Eh heh heh, well all the most powerful nin seem to be perverts, and I was screwed if I didn't do anything…anyway, it totally did work, I think it's because he's been a widower for more than a decade."

"Gah, just, just go Naruto, after our week break you and I are going to train and train harder than you have ever done in your life. If you have to rely on techniques like that to beat opponents you won't last long against people that are actually hostile."

Naruto pouted, then dropped the technique and walked towards his apartment on the other side of town, his happy mood from learning a technique destroyed by Sasuke's ripping into him about his sole creation.

Meanwhile back at sasuke's apartment…

He looked around to make sure nobody was spying on him and made a ram seal and was enveloped by a cloud of chakra smoke, only for it to disperse and leave her standing there, this time fully clothed. She wanted to check something that she had noticed when she used the technique. Normally the transformation technique was a misnomer, the technique was a genjutsu and was about as solid as a normal clone. But when she reached a hand up and prodded one of the pair of things she didn't have without the technique she blushed, they felt real enough. Somehow the idiot, probably by sheer dumb luck and not understanding how the transformation technique worked, had invented a true transformation. 'I'll need to see how long the technique can last, and maybe walk around town tomorrow to see if it is as foolproof as I think it is, I can't tell any more output other than the single pulse from initiating the transformation, maybe it lasts until cancelled?' she shrugged, plenty of time to figure that out later, she needed a bath before…, 'Yeah, I can just get one in the morning, no reason to dispel the technique just to reapply it and have it fail in the middle of the night. It'd be a waste of chakra. She made her way to her room and got ready for bed.

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So, sasuke got the technique, next chapter he discovers a little something about himself that he never knew