Flashback
Naruto would undergo five years of extensive training it was the reason why he stopped playing sports he still played the guitar a little bit that barley got his attention anymore because now he had a new focus and a new drive whenever Naruto was asleep he would be visited by the vestiges of Minato and Kushina you could say that this was training in a astral plain of sorts since they couldn't be with when he was awake.
It was during this Naruto would take in instruction and learning of course minato being the hokage and being very studious he learned as much as he could while he was serving as hokage.
Naruto would have to learn the basics learning chakra control learning how to mold chakra thankfully Naruto didn't have to go through anything like the ninja academy so Minato would be the best teacher to train him in this regard of course Naruto dis have some trouble with this and Minato chalked it up to the influence of the nine tails on his overall chakra meaning that Naruto's chakra control wasn't going to be anything like his father's.
But still it could be refined slowly but surely naruto made progress by the age of 13 he was able to walk up the side of a tree and even walk out the side of a two story house his reflexes and his overall skills Improved day by day but Naruto was able to do that by doing some exercise and running around his town and even doing some parkour in the park.
However now knowing what he truly was and knowing what he could do it removed sort of that limiter that he had on himself you see Naruto naturally always had the strength and the skill the problem was that Naruto had this limit that he had always placed on his own body the reason why Naruto would never jump off a three story house was because he feared he might hurt himself and sure to a regular human in the world he had been sent to that was a fear that he should have.
However Naruto was not a regular human at least not by what you would define as a regular human when he trained he could actually push his body push limits Naruto also learned about the history of the ninja world as well as learning the basics of ninjutsu,genjutsu and taijutsu as well as the five changes in chakra nature of course this was all be based off of information from the hidden leaf and Naruto would take the little bits of information that he learned and he would write them down in notebooks they ended up with him having a nice collection.
He had a book dedicated to the five elements fire,water,earth,wind and lightning.
he had a book a book dedicated to ninjutsu.
a book dedicated to genjutsu.
And a book dedicated to taijutsu and it's various forms
Of course Minato can only give him a brief overview even so Minato did have knowledge as the hokage and because of this he has a lot of information that he could give Naruto when it came to Naruto's own overall training he took the usage of jutsu that he felt could work for him over time he would learn how to control his chakra better as well as having the shadow clone jutsu added to his arsenal.
Since performing jutsu wasn't really his strong suit he also learned the shadow shuriken clone jutsu as well as his nature in wind release he was even able to add a few wind style jutsus to his arsenal.
(As you'll see)
Naruto's Five Year Training
(Chakra control)
(Shadow clone Jutsu)
(Shadow shuriken Jutsu)
(Wind release)
(Wind Style: Gale Palm)
(Wind Style:Wind Dragon)
(Wind Style: Vacuum Blade)
(Wind Style: Wind Dome)
(Wind Style: Gale Fox Barrage)
Of course Naruto was grateful to learn these techniques although at the same time he was always admonished to use his power wisely while Minato and Kushina couldn't fully understand the world that Naruto had been sent to they knew that even still being a good human being and having decency and doing what was right was something that every person should know no matter what world they were in and as such they admonished for Naruto to never abuse his power to always use it to protect and to defend in service of others these were the lessons that Naruto would take to heart.
Of course as Naruto approached his later teen years reaching the age of 16 there was one final lesson that he needed to learn one from his mother and one from his father.
You could say that this was in effect passing down their Will of Fire for Kushina she taught Naruto how to manifest the Uzumaki chakra chains or adumantian chairs as they were referred to they were good for fighting and restraining an enemy and it was in a way her legacy something that only Naruto could have as he would seemingly be the last Uzumaki.
And then from Minato he would give Naruto the details for the jitsu that made him famous the flying raijin or the flying thunder god to be mo specific it was a very complicated Jutsu to learn it was so much form of making the chakra formula properly as well as learning how to manipulate and use it.
Of course Naruto would have to have some practice with it although he had looked forward to whatever else his parents could teach him however as the time came for his birthday that was when Naruto was be in for a rude awakening.
as time progressed the amount of times Naruto had spent with his parents it started to decrease at first it was gradual but slowly it became more and more the chakra that had been used to seal away the consciousness of his mother and father into him well it was going to run out eventually soon the wouldn't be able to talk to him anymore they were actually fortunate that the amount of time they had with him had been for so long.
It allowed Naruto to grow into a proper Shinobi but now that time was coming to an end.
It would be on one night in particular where Naruto was looking forward to seeing his mother and father to tell them of his progress and to wonder what lessons he were going to learn but tonight there wouldn't be a lesson they simply enjoyed spending time together.
I'm a sense Kushina and Minato wee given an opportunity even from beyond the grave they had been given a small portion of their life to allow to see Naruto grow onto the youngan he was becoming and well tonight was the end of that Journey for Naruto he couldn't believe it it wasn't supposed to end like this he didn't want to not see his parents anymore.
He he had grown to love them he wanted them to always be here this was the only way he could make contact with them he didn't know if he'd ever get back to the other world and even then he knows he'd never see them again.
Naruto tried desperately but Minato and Kushina would tell him not to worry they promised that they would always be with him that the lessons he learned would always be in his heart and mind and that whatever he did in his life they were going to be proud of him but for Naruto it was still so surreal it felt like he was losing them for good it left Naruto with many tears and even minato and kushina shed some as well as they embraced their son as they slowly disappeared from this realm of existence Naruto desperately clinging and holding on to them remembering everything that he had learned but it still felt like there was so much more that they could teach him he was far from being the perfect Shinobi didn't think he were ready he knew he wasn't he still needed them he didn't want them to go.
He just didn't want to lose them.
As they finally disappeared Naruto would only hear one thing from them their final words "we love you our son".
Naruto would find himself waking up once more from that point forward he would no longer have any contact with his parents his adoptive parents could see that there was a sadness in their son's eyes but he assured them that everything were fine this didn't change how Naruto felt for the hyoudou's he loved them very much and he cherished being their son but at the same time he also missed minato and kushina.
Soon Naruto's highschool days would begin there was the local academy a prestigious one known as kuoh academy for years it had only been for girls but now it finally become co-ed as Naruto made his way through his high school years this freshman year was rather uneventful not really much to speak of he took his training seriously at least whenever he was in school he would just be honing his skills in any way he new best he also took into saving money from odd jobs to build a collection he had some specially mad weapons from a local weapons antique store and the old man that ran it was actually a forger naruto had something specific in mind 12 kunai's there would be a little expensive due to their special design with a three-point blade as well as the heavy handed wooden handles but Naruto didn't mind it he had been saving up for so long because this was what he wanted he was finally going to take the next steps to mastering the flying raijin.
However mastering that jutsu would be easier said then done for Naruto he were a lot of things and in his own way he was kinda a prodigy but he was nothing like his father because there was a lot of trial and error with this Jutsu at first it started simply enough Naruto would attempt to use the flying raijin the goal was to teleport out of his room into the backyard the first time he tried this his clothes left but not him after a few more tries he was finally able to leave the room except with no clothes and unfortunately his neighbor once saw butt bald naked in the backyard seemingly out of nowhere and that left Naruto extremely embarrassed he tried once again and he arrived at the backyard but instead of being on the ground he was up and caught in the tree branches Naruto would try once again but he didn't arrive exactly were he needed to go and instead he found himself landing face first on the concrete just five feet from the grass.
It was a lot of trial and error a lot of embarrassment and a lot of sleepless nights but eventually Naruto got the hang of it he was able to teleport from one kunai to another and he was able to learn slowly but surely how yo perfectly use the jitsu formula writing it down on another object was simple but learning how to place the markers using his own hands that was going to be a bit tricky but even still as long as he had his kunai's marked they could be used and be rather effective he was able to find a local shrine from his search and he was able to ask for an empty scroll using the scroll he sealed all 12 kunai's inside of it and he placed it inside of his coat pocket so he could use them at need be.
As Naruto continued on in his highschool life he wondered if this was all there was meant to be of course he was grateful for the training and everything he had but still it wasn't like there was any situation that ever forced him to use his power say for the occasional heroics maybe pulling someone maybe pulling someone from out of danger if they were about to get hit by a car or doing small stuff like that but even still it wasn't like there was some Grand enemy that he had to fight in the world no need for bust out highly powerful and explosive jutsus although while he was grateful for the peace he wished that there was some form for him to test himself he had even wanted to try out his father's other signature Jutsu the Rasengan but he hadnt fully Mastered it at least not not in the terms of adding a chakra nature maybe hed take that down on his next task but even still the only thing he could do was maybe travel to an abandoned forest or mountain clearing and just get off some Jutsu if he felt like it
A couple of rasengan's to the rocks a couple of wind style cutter Jutsus to the trees but there was nothing that truly challenged him.
Naruto lamented over this as he was making his way home when he heard his voice being called out he turned and saw a cute girl she was extremely cute although she was wearing a school uniform he'd never seen before the girl nervously walked up to him as she introduced herself as Raynare Yumina and her reason for stopping Naruto she wanted to ask him out on a date.
End of Flashback
Rias Gremory she had been keeping a close eye on things around her town among them was a particular boy a foxy looking boy however she didn't want to things even though he appeared to be unassuming and rather aloof there was more to him than met the eye as such she only had her trusted allies to keep a close tab on him to make sure everything with being on the up and up.
For Naruto the only thing that surprised him more than anything was his sudden success in romance he didn't spend all his time training and focusing on his skills no Naruto was still a teenage boy and teenage boys had desires as much as anyone else the idea of having a girlfriend and potentially finding some romance and just enjoying a quiet peaceful life had t escaped him although he would even have to admit that when it came to girls he didn't have the best of success and now that to have a cute one all of a sudden that was actually into him well that only gave him a more of a confidence booster than if hed ever had one.
Of course getting to know Raynare was easier said then done she didn't let naruto come to her home or anything like that but even still they enjoyed walking to and from school together and they even set up a day to go and have a date for Naruto things felt like they were on the up and up.
Maybe if this life as a Shinobi didn't pan out the way he wanted to then this was definitely going to be a cool consolation.
Of course as the day of the date finally arrived it was eerie feeling Naruto couldn't fully describe it but he felt secure for the most part he had his scroll inside of his coat pocket in case he needed to use his jutsu for any matter and all in all he didn't think that anything could go wrong.
As he and Raynare met for their date it went without a hitch Naruto took her to his favorite restaurant a ramen shop where he had acquired a love for ramen they went to the movies they went to the mall he bought her a gift a bracelet that wasn't cheap by any means and was actually of nice quality they enjoyed their weekend together and for Naruto it was almost picture perfect.
His life he even thought about seeing him and Raynare maybe taking things further down the line maybe their relationship could blossom into a potential marriage maybe they could even grow old and have kids together of course there's have to be the idea of him telling her of his history as a ninja but maybe he's just cross that bridge when he got to it.
They found the selves walking alone in the park the lamps beginning to illuminate the sun beginning to set the stars starting to twinkle in the sky above them the mold was set just right maybe they could share a kiss maybe it could lead to other things I mean he had learnt and mastered his flying raijin pretty efficiently if he could place a marker between their houses the possibilities could be endless.
But all in the same Raynare seemed to have enjoyed herself greatly as she turned back to Naruto she exclaimed that this date has gone so well and she couldn't imagine it ending any better but she onenthing that she needed to ask Naruto before they did anything else Naruto's ears would perk up with anticipation his cheeky-like smile starting to etch across his face he started to turn bright red as Raynare got closer she leaned over her lips whispering into his ear but what he heard next changed everything as she leaned in she kindly asked Naruto.
Raynare: Would you die for me~?