Disclaimer: First Chapter
Stort Start!

7 Days had passed.

Rias was curious now, she had avoided answering her curiousity for all 7 days and didn't even use her familiar to spy on the training. She had patiently waited as she trained by herself, basic physical and magical training, and studied. She studied Riser's peerage via his previous Rating Game recordings, and she had been making battle plans for each of them.

So she was following the sounds of violence.

She was astounded when she did arrive.

The first thing she saw was Issei clad in dragon armor, the Balance Breaker for the Boosted Gear, which on it's own was a massive improvement to her peerage and Issei's personal strength. That was the very first thing that she couldn't help but notice, but it wasn't the only improvement.

Then there was Koneko.

She was covered in a light yellow aura across her entire body, and her Nekoshou features were on full display. Rias could only watch with widened eyes as the girl had not one tail, but two tails behind her, and cat ears. She was covering her body with her very life force, her touki was being wielded like a weapon. Rias had seen a similar way to use touki before, but she had never once expected that Koneko would ever shed the fears she had and actually use her natural heritage.

She was using Senjutsu to do this, that was how she was doing it.

Yuuto was even faster, and he was using swords that had more weight to them. That alone meant that his physical strength had improved to the point that he could wield even more powerful swords, without hindering his speed and skill. The improvements to her peerage might seem small at first, but the fact was that it was amazing.

Rias watched them fight.

Issei was attacking with force that she herself couldn't physically compete with, and with speed that was nearly as fast as Yuuto.

"Groooooah!"

Naruto blocked a punch from Issei as white fireballs peppered the ground and kicked up dust, blocking his vision. Yuuto took a half swing at him from inside the dust, clearing the dust and getting Naruto to duck. Naruto grabbed Issei and Yuuto's wrists to stop their next attacks, when Koneko got behind him.

"So fast... she was never slow... but... wow."

The aura around her fist increased, and Naruto let go of Issei and Yuuto. Koneko actually crossed her arms in front of her before the attack even came, and she blocked a punch that was strong enough to destroy the ground behind her. Yuuto summoned a second sword and swung them together, while Issei put his hands on the ground to give Yuuto the freedom to swing his swords. He kicked with both of his legs to aim at Naruto's knees.

Koneko jumped above where Yuuto would be slashing, and aimed at Naruto's head from above, preventing him from jumping to dodge Issei, or ducking to dodge Yuuto. She pointed her hand and shot fireballs behind Naruto to cut off his escape.

Naruto grabbed one of Koneko's fireballs, and tossed it at Yuuto, grabbed Koneko with his other hand and tossed her at Issei. Yuuto jumped back and dodged the fireball, while Issei rolled and avoided Koneko as the girl twisted her body and used her tails to balance herself, landing on her feet.

"Wow... WOW!" Rias couldn't stop herself.

They had all improved so much.

Koneko and Issei had improved the most as far as physical abilities and unlocking more abilities, but she would not discount the fact that Yuuto had improved his strength, speed, and his skills had become sharper. For a Knight like Yuuto, those improvements were among the most important, because even small improvements made the most difference.

"Koneko and Issei are even stronger than me now... amazing." Rias couldn't see herself beating either Koneko or Issei in their current conditions, which meant that both of them had improved to the point that they had exceeded what the normal high class devil could do. She expected that much from Issei's Balance Breaker, but she didn't expect Koneko to reach that level of strength in just a matter of 7 days.

Koneko was nearly as fast as Yuuto had been before the training, which thanks to her Senjutsu and Touki, showed just how much her mental limiters had played into weakening her. She couldn't even say it was all that, Koneko's own skill in combat had increased as well. Then there was Issei, who had started from practically zero. His hand to hand skill had increased to the point that he had been as good as Koneko had been at the start of her training, while there were room for a lot of improvements, that was impressive amounts of improvement.

"ORA!" Koneko started to chain attacks together.

All of them were aimed at Naruto's center, and Issei joined in from the side with a full power kick. Naruto trapped Issei's kick with his arm, and used his free hand to block Koneko's punches. The second a punch was blocked, she withdrew her hand while still continuing onto the next punch. Issei swung his other leg at Naruto, so Naruto took his hand away from Koneko and blocked the kick.

"Heh... grrrr." Koneko growled when Naruto raised his knee up and blocked her next punch, and extended his leg. She flipped back and Yuuto came from behind her, ducking underneath the kick and swinging his sword at Naruto's standing leg.

"I'm taking that leg!"

"Ooooooh." Naruto was interested, but he just hopped up and landed on top of Yuuto's shoulder, letting go of Issei, before he kicked Yuuto in the chin, and followed up by a heel drop to the top of his head.

'We're still not hitting him...' Yuuto thought as he was knocked to his knee, he used his sword to steady himself. Koneko jumped off of his back and went after Naruto, and he tossed a sword up to her. She actually grabbed it, and she extended her fire onto the sword and took a swing with the flaming blade.

She let go of it the second that she missed, and the sword landed on Issei's hands, and he took a swing at Naruto from behind.

"Their teamwork is amazing, they aren't even talking to each other." Rias watched as Naruto kicked off of Koneko and flipped over Issei's slash, kicking Issei in the head as he did so. Naruto landed on his feet, while Koneko and Issei landed on their backs, but recovered in an instant. Rias watched as all of their injuries were instantly healed, while Naruto dusted himself off. Her trio got back to their feet and got ready to go again.

Naruto gave a smirk.

"... and training over." Naruto clapped his hands together.

Issei's Balance Breaker shattered as he dropped to his knees, before he passed out. He instantly fell asleep the second that the training was over, and he was finally able to rest. Sleeping blissfully with a smile on his face.

Koneko fell backwards and landed on her back, her touki aura vanishing, and the number of tails she had shrinking from 2 back to 1. She had the same blissful smile on her face in her sleep, because it was the first time she had gotten the chance to sleep in 7 days.

Finally, Yuuto's swords shattered and vanished as he too just passed out where he stood.

"You taught them so much, thank you for teaching them." Rias bowed to Naruto as he picked up Issei and Koneko, tossing them over his shoulders. He gestured for her to carry Yuuto, and she rushed over to her Knight's side.

"I just allowed them to draw on their own power, whatever techniques or skills they learned, they learned on their own. Right now, I would say Issei in his Balance Breaker and Koneko are about equal in strength, while Yuuto is going to need to find a different teacher, more suited to him personally. He stopped seeing benefits from this training 2 days ago." Naruto would admit that Yuuto had stopped making overall progress on the 5th day of training.

There was something in him that this type of training just didn't help with, a wall that was deep in his soul that needed something to push him. Naruto could increase Yuuto's strength and speed, and sharpen his skills, but until Yuuto broke whatever wall was keeping him limited, his growth had reached a point it couldn't go much higher.

"How did you get Koneko and Issei so strong?"

"Guts, I taught them the value of guts, never giving up, protecting something precious, courage, ect... I gave them the tools-"

"But COULD you teach them techniques too?" Rias asked with stars in her eyes. She could only imagine how strong they would grow if Naruto did more than just pull out their own latent potential, but also made it a point to teach them skills. Naruto looked at her for a moment in amusement.

"I could, but that wasn't the point. Being a good teacher isn't about teaching techniques, it's about teaching a student the lessons they need to succeed on their own. Just like my Master gave me the tools I needed to overcome any challenge, I passed those tools down to them." Naruto stated with a grin. His own Master, Jiraiya, had focused less on techniques, and more on helping him get to the point where he could stand on his own, develop his own techniques, and gave him the tools he needed to survive and thrive on his own.

The desire to work hard, never give up, and the guts to push passed your limits had helped him become as strong as he was.

"Oh..."

"During the training, in my head, I kept track of their progress by levels. I will tell you, at the moment, Koneko and Issei are at Level 40 in their training difficulty, while Yuuto is on Level 33. Issei in his Base Form is at about Level 4. It takes Issei 30 seconds to activate his Balance Breaker, and without being healed or having his stamina refilled, he can maintain it for about... 10 minutes." Naruto explained his overall guess on what their abilities were. He had broken Issei's Balance Breaker many times, MANY times.

He didn't focus on extending the amount of time Issei could maintain his Balance Breaker, but he did get the time it took to activate it down from 2 minutes at the start, to 30 seconds.

"10 minutes isn't a lot time."

"10 minutes is the amount of time he has if he goes full power, and boosts himself to his limit. At half power, he could stay in Balance Breaker for 30 minutes, and using the minimum amount of Boosts, he can go for 50 minutes." Naruto explained that as well to Rias. The two of them walked together as they carried her trio to their beds.

"Okay, that is a lot of time." Rias corrected her statement. "Well... at least Koneko and Issei are 40 times stronger than before."

"Level 40 doesn't mean they are 40 times stronger, it means that their bodies adjusted to the 39th Level of training. Still, as it stands, both of them have grown a lot. Issei's magical power HAS grown a bit... but his base reserves are still... pathetically small." Naruto couldn't teach Issei any techniques even if he wanted to. The fact was that Issei was simply not suited to becoming his apprentice, and Yuuto had such a vastly different fighting style when compared to himself that he couldn't teach Yuuto anything either.

Not that he was going to teach any of them his techniques, they were not his apprentices, they were his students. He was getting paid to teach them, and that was about it.

"Would you like to stay and watch our Rating Game, to see how they do?" Rias asked Naruto politely.

"I might, unless somebody else wants to hire me to teach their brats. By the way, if you want to hire me in the future, I can teach this brat something about Senjutsu." Naruto spanked Koneko in her sleep, gently on the butt. The fact she could do a form of senjutsu that was pretty similar to how he used Senjutsu meant that he could actually show her a thing or two.

Only if he was paid though.

"So, like... a private tutor."

"Exactly, though that will have to wait until after the maid woman gives me my money for these 7 days."

"Actually, can you spend 2 days tutoring Asia on healing."

"Have her read a medical book, and study. The ability to heal works better the more that you know about healing, my healing abilities don't actually require me to know how to heal. For other healing abilities, the best way to improve them is through spiritual training and mental training." Naruto stated with a wave of his hand. He would give that knowledge to Rias for free, since this was still the 7th day of his teaching and he was still getting paid. "It's boring to just watch a girl read a book, I prefer getting hands on, or at the very least watching them go through real training." Naruto barely considered reading to be training.

He DID consider it to be real training, but it wasn't a training that he wanted to watch a person do. He would rather watch training where he could see the results of the training happen in real time.

"Still, surely there is something I can do to reward you. These results are amazing, you didn't just get Issei to Balance Breaker, or got Koneko to overcome her fears, and she is just as strong as a Longinus Balance Breaker."

"Well duh, Koneko didn't have a choice but to get as strong as Issei was getting. This kind of training kind of forces you to get as strong as your comrades. If Koneko fell behind, she was going to suffer... so she had no choice but to keep up." Naruto didn't really consider it that amazing. Koneko had been forced to grow with her own abilities, while Issei was pretty far behind the others as far as his base form was concerned. "Actually, Yuuto is the most impressive. Koneko unlocked hidden potential, and Issei unlocked Balance Breaker... but those abilities aren't their base forms. Yuuto kept up with them for a LONG time before he reached a wall."

The fact that Yuuto kept up with them all the way to the 33rd Level of Difficulty, and he didn't have anything to increase his physical abilities, showed that through sheer guts he managed to keep up with them for so long. Yuuto was the most impressive of the three for that fact alone, even if he was now the weakest of the trio overall.

"Then spending another day on Yuuto might be a good idea." Rias was willing to have Yuuto train another day.

"Yuuto has reached his limit with this training, I would say... he might reach Issei's Balance Breaker level if he trained like this... for several years. He's reached the limit of the results he can gain from this training, until he breaks whatever is holding him back, I can't do anything for him." Naruto had reached the limit of how much he could help Yuuto grow stronger. "... he needs to either let go of his revenge, or achieve revenge. Until he does either of those things, this is his limit for now." Naruto could see the desire for revenge.

"So can Koneko and Issei continue to grow stronger by this training?" Rias asked with her eyes shining.

Naruto nodded.

"Way stronger, this training is perfect for them. Issei can benefit from this training, but he needs to learn magical skills to balance his skills out. Koneko is extremely balanced already, but if she studies in Senjutsu more she can get even more benefit from this." Naruto saw Rias wipe saliva from her mouth as she was hearing that her peerage could grow even stronger, and that they could be put through even stronger training.

"... This training won't leave mental scars?"

"Nope! The best part of this training, once you break a certain point, your willpower gets to the point that this kind of training won't leave mental scars. The more you do this training, the less likely you are to suffer from mental scars, because your willpower gets stronger!" Naruto gave her a thumbs up after he slapped Issei and Koneko on the asses.

"Great!" Rias sighed in relief.

She grinned.

"I like you Naruto-sensei, if you don't mind, in the near future, we will be getting a month off from school. I would like to hire you again to train Issei and Koneko during that month." Rias was going to take his advice and not have Yuuto train with Naruto, since she fully trusted his judgement on the matter.

"If my schedule is free, sure... school? You guys are teenagers, why are you still attending school?" Naruto asked in actual confusion.

School stopped for his world at the age of 13.

Any studying you did after that was done on your own time, was she saying that in this world, that you were forced to stay in school all the way into your teenage years?

Weird.

Chapter End!
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