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Daichi was in his room meditating. He spent much longer than usual due to the mental fatigue he accumulated throughout the day. He wasn't at 100% but the pain and trembling throughout his body subsided.

"Haaa…" He let out a breath and got up.

He joined his grandfather as they ate their last meal for the day.

"I didn't think you'd successfully master it in such a short time." Even after all this time Kensei was amazed at the talent Daichi displayed. And it was evident in his voice.

Daichi nodded but he didn't say much.

"What's wrong? You don't seem satisfied!" Kensei asked the kid.

Daichi took a few moments before he answered. "It's just that… I did learn the second step of the technique… But I'm nowhere near mastering it."

Kensei quietly listened. Daichi gathered his thoughts and explained. "I did make the rubber ball explode but I had to concentrate hard and use up a lot of chakra. It took almost over a dozen seconds to make the ball blow up."

Kensei nodded as he understood Daichi's intentions. "So you want to reduce the time taken and refine your control over this step."

Daichi nodded. "Yeah!" 'Right now my chakra potency skill is only at level 51. I have to get it to 100 before moving to the final step. But that's easier said than done….'

"It's not just the time but you have to increase your chakra reserves as well." Kensei said to the kid.

Daichi looked at his grandfather. Kensei explained his thoughts.

"Only someone with above normal reserves would be able to properly use the Rasengan. To destroy the rubber ball, the person must have sufficient chakra reserves as well as have a strong chakra. So mastering the second step would definitely improve your chakra abilities. This kind of training forces your chakra coils to expand and it increases the power of your chakra as well. Giving an overall boost to your strength."

Daichi nodded with the assessment. He rested and didn't continue training that day.

Wednesday.

"Boom."

It was night time and the sound of a rubber ball bursting was heard. Daichi fell on his hands and knees gasping for air. He looked at the chakra potency skill.

'Level 60? That's it? I've only increased about 9 levels?'

Daichi then opened his stats and looked at the chakra stat. 'It looks like I was able to increase my chakra stat by another 4 points.'

Daichi tried to get up but wobbled and fell down…

"Aargh…." He grunted in pain as his palm touched the hard soil. Daichi looked at his right hand.

'Chakra burns… It stings like hell… And my whole body… Feels like sharp needles prickling on my insides.'

Due to the intensity of the physical punishment Daichi put himself through, even the physical endurance skill increased in level a couple of times. Daichi laid on the ground unable to move and in pain. At that moment Kensei walked towards him.

"I would tell you to take it easy and not over do it but… I know that's not your style!" The old man said with a small smile. He then kneeled beside Daichi and extended his hands.

"What are you…?" Before Daichi could even finish the question he saw the old man's palms lit up in green color indicating the use of medical Ninjutsu.

Warm and cool chakra entered Daichi's body numbing his pain.

"Oohhh wow! That feels soo good…" Daichi almost moaned as he felt the pain recede. Kensei focused on Daichi's hand and healed the burned skin. He then focused on the rest of the body.

Daichi saw his HP increasing. He looked at the green chakra flowing into his body. Daichi wanted to learn medical Ninjutsu but due to the gamer's body he didn't put much priority on it. But the last few days have changed his mind.

"Hey gramps…" Daichi slowly called.

Kensei looked at the kid sprawled on the ground.

"Let me guess… you want to learn Medical Ninjutsu?!" Kensei had a smirk on his face as he anticipated such a thing.

Daichi pouted as he heard the teasing tone of his grandpa. "Now you're just showing off!"

A couple more seconds later Kensei let the green chakra flow die down and stood up. "How do you feel?" He asked.

"Much better! Thanks." The academy student answered as he stood up. He looked at Kensei with a questioning look. "So… Can I?"

Kensei nodded. "Yes. I know your wounds heal much faster than normal but having some medical skill under your belt would be beneficial. But we'll begin your medical training next year. When your fourth academic year begins I'll introduce you to someone I know. By that time you'll have a much bigger chakra volume and perfect control."

Daichi nodded and they went inside.

Thursday.

Kensei was watching Daichi blow up another rubber ball. 'He's getting better at that. The speed and power of the explosion is increasing. His chakra reserves are expanding at an incredible rate. It's as if his body is sensing the stress and limitations and adapting itself accordingly.'

This narrative has been purloined without the author's approval. Report any appearances on Amazon.

"Hey…" Daichi suddenly called out to Kensei.

"Hmm… What is it?"

"How do I build up my chakra faster?"

Kensei thought about it for a couple of seconds and then gave the answer.

"Concentrate the chakra in your body into a tight spiral. This will help you familiarize the way your chakra moves and helps build up chakra reserves over time."

Daichi nodded at that and got back to work.

Kensei looked over to the second Daichi that was meditating under a tree. 'To think he would use shadow clones like that… it's actually brilliant.'

Daichi took a page out of Naruto's book and created clones at several intervals that rested and gathered chakra.

The created clone meditated and kept himself in optimal shape. But Daichi, having his reserves halved, had to force every ounce of his chakra as he trained. But still this method did help cut down the time needed to rest.

Daichi started his training at dawn and by late afternoon he was able to increase the chakra potency skill level to 70.

"Boom!" Another rubber ball blew up in Daichi's hands.

Daichi let out a breath as he looked at the remains of the ball. He wasn't nearly as tired as before. The boy then looked at the clone and dispelled it. The chakra of the clone came back to Daichi and was ready to increase the difficulty.

He now had no problems destroying the rubber balls with his chakra. But the skill only reached level 70. Daichi wanted to perfect the skill before moving on to the last step.

This time he took out two balls and held them in both hands. And just like he did with the first step, he wanted to blow up both balls at the same time. This refined his skill to perfection.

Daichi continued training like that for the remainder of that day and the next. He got closer and closer to his goal and it only motivated him to keep pushing himself. He endured chakra burns and severe body pains and chakra exhaustion but he never stopped. With only 4.5 hours of sleep needed to be back to his best, Daichi pushed forward like a maniac.

It was Friday night. Millions of stars lit up the sky. It was a magnificent view and Daichi was laying sprawled on the ground enjoying it.

Chakra Potency - (Active/Passive)(LV. MAX)

Effects:

+200% Increase in Chakra size and range.

+10% Increase in Chakra Potency and CP.

CP Cost: Depends on the user.

Congratulations. You have successfully trained a skill to its highest level.

+500 Exp.

+75 Exp.

"Finally!... It's done."

Daichi had mastered the second step to perfection. The chakra potency skill was now leveled up to a hundred. He also gained another 6 points in chakra stat in the last two days, bringing his chakra points to 129.

It wasn't the only stat to grow. The stamina and vitality stats also gained several points during the last week.

After a few minutes Daichi sat up and meditated. Once the fatigue left and his chakra was somewhat restored he stood and went to a nearby giant rock.

'I remember Jiraiya showing Naruto how the Rasengan attack would look like, after mastering the first two steps.'

Daichi stood in front of the rock and gathered chakra into his right palm. Within a second a powerful torrent of chakra swirled into life and spun in Daichi's right hand.

Without wasting a second Daichi thrust his hand into the rock. The Rasengan made contact and blew a few chunks of the rock away. The rock didn't crumble but it had a deep spiral grove etched into it. The mark of the incomplete Rasengan.

Daichi looked at the results.

'It's similar to what Jiraiya shows Naruto. I've successfully mastered the first two steps. Took me 6 days to complete them… But now I'm ready. Time for the last one.'

Daichi then looked at clouds blocking the moon light and the stars. 'Ok, maybe tomorrow. '

Saturday.

Daichi blew air into a balloon and soon tied the end and held it in his hand. He remembered the principles of the first two steps. 'Rotation and power. And now the final one. Containment.'

Daichi began gathering chakra and in seconds the empty balloon had bulges forming on its surface and the next second it exploded.

'Need more control.'

He took another balloon and repeated the process. Each time the balloon exploded Daichi felt that he was getting closer and closer to his target. After a couple more tries a new skill appeared.

[A new skill is created with a specific action.]

[Through continuously concentrating chakra to the palm of your hand and trying to contain it, the skill 'Chakra Confinement' has been created.]

Chakra Confinement - (Active/Passive)(LV.01): A skill that helps the user master their chakra and use it more proficiently. This skill is one of several advanced chakra control techniques to help the user control and confine their chakra to a specific area.

Effects:

+2% Increase in Chakra Form.

+2% Increase in Chakra control.

CP Cost: Depends on the user.

Even though the third step was the most difficult, once Daichi got the hang of it, he was able to make quick progress. By late night, Daichi had leveled up the latest skill to 62.

Sunday.

It was Sunday. Daichi woke up early and got ready. He wanted to complete the last step today as the academy would resume classes tomorrow.

'Once the classes start I wouldn't be able to dedicate my time to training like I had been this week.'

The moment Daichi began training the third step, he knew it would be a challenging task.

Daichi took another balloon as the one in his hand popped. 'This is by far the most difficult step. Combining the previous two aspects is not easy. It's no wonder there are only a handful of people who can use the Rasengan.'

Daichi created several shadow clones to speed up the control training and it helped. All of them used both hands and trained hard all day.

'It'll take too much time if I don't train like this. Since this part is all about the containment and control aspect of chakra, the shadow clones would be of great help.'

Each time a shadow clone made significant progress, Daichi dispelled them. To counteract the fatigue he got from the clones, Daichi had a couple clones meditate as well. The level of the skill was rising much faster as Daichi had perfected his previous chakra control exercises. Daichi also had the 'Absolute Chakra Mastery' skill working for him. It tremendously helped in speeding things up.

Skill Chakra Confinement's level has risen by one.

Daichi didn't use shortcuts like Naruto. Yet by dusk he was able to level up the skill to Max. Even though it was difficult at first and the most difficult step, Daichi managed to complete it in a single day.

Congratulations. You have successfully trained a skill to its highest level.

+500 Exp.

+75 Exp.

Chakra Confinement - (Active/Passive)(LV. MAX)

Effects:

+200% Increase in Chakra Form.

+200% Increase in Chakra control.

CP Cost: Depends on the user.

Daichi looked at the motionless balloon in his hand and grinned. The balloon didn't make a single ripple, indicating that Daichi had mastered the technique.

He then let go of the technique and went to the nearby rock. The same rock that had the spiral pattern on it.

Daichi held his hand and gathered his chakra. Within a second a bright blue ball of swirling chakra came to life.

Kensei who was watching Daichi was gobsmacked. 'That's… That's the Rasengan… He did it… He actually did it! In a single week he mastered what it took others months and even years to learn.' Watching the blue ball of chakra in Daichi's hand, Kensei's eyes widened and his jaw dropped.

Daichi looked at the blue ball of chakra in glee and amazement. 'One of the most iconic jutsus in the world… And I'm holding it in my palm.'

Daichi was unable to hold back any longer. His eyes narrowed and he thrust the ball towards the rock.

"Rasengan!" He excitedly shouted.

"BOOM!"

The chakra ball completely crushed the giant rock as if it were brittle glass. Only a few small chunks of it survived.

At that moment he read several notifications that appeared. Daichi read the messages and his grin widened.