TWO YEARS LATER (Raijin's age 11 years)
One thing Satoshi learned during next few days after activating his chakra while also pretending to struggle to extract chakra was about the effect of activating his chakra on his body and mind. He had thought that if his physical and mental energy were to increase, he will be smarter or faster or stronger but only things that increases are his endurance and information retention speed.
For example if before he was exhausted in only 30 minutes of hard work out, then now he can perform them straight for 3 hours without any break in between. Similarly, if before he can retain an information after reading them 5 times then now, he can retain them after reading them only 2 times.
As the time he can do hard training increases, he gradually increases the intensity of his training during these two years. At the start for first few weeks his routine consists of performing 50 push-ups, 50 sit-ups, 50 squats, and a 5km run every single day and it would take him 5 hours to complete it then after three months he gradually increased them to 100 push-ups, 100 sit-ups, 100 squats, and a 10km run every single day.
When he was able to do the same exercise without feeling any fatigue which took him about next100 days he would double the intensity. Now he can do 700 push-ups, 700 sit-ups, 700 squats, and a 70km run in just under 5 hours. That means his speed also increases along with his endurance and strength.
All of the physical training he would do before the academy starts at 10:00 am. At the academy he would fully concentrate on his studies without wasting his time socializing with anybody due to this he was considered a loner and he would also try finishing all the given assignment in the class time already due to his increase in retentions speed.
After academy which ends at 4:00 pm he concentrates on hand seals and leaf concentration exercise. For the leaf concentration exercise, it took him 2 months of constant practice to be able to be able to instantly extract chakra from his physical and mental energy.
After that it took him additional 2 months for him to be able to channel a constant stream of chakra from his core to his forehead to create the suction and balance the leaf for it to stick. He learned that the basic property of chakra is to be neutral. So when he would increase the amount of chakra the leaf would flung away from him and if the amount of chakra was just right the leaf would stick on his forehead.
After successfully sticking the leaf on his forehead for 5 minutes he notices that he now can extract about 5% of his total chakra reserve. So began pondering how to increase the difficulty level of it that's when he remembers that after the forehead the next difficult place to channel chakra is hands so he decided to perform the same exercise for his hands one palm at a time and it took only about one month for each palm and a additional one month for him to do them on both his palm simultaneously. This results in increasing his total chakra capacity by further 10% that means he can now extract 15% of his chakra reserve.
After that he again increase the difficulty level by performing the same for his foot and this took him next 3 months which again increases his chakra capacity by 20% more that means his total extractable chakra increase to 35% of his reserves. After that he again ups the difficulty be deciding that he would do the sticking exercise on his forehead, hands & foot simultaneously.
Although initially he had thought he would be able to do them with some difficulty as he had already experienced in performing the exercise on two separate place simultaneously like both his hands or his foot so he thought it would be just a little difficult for three places simultaneously, but as he started he realized that it's not three places but five places simultaneously and the distance between them is huge so it took him next 14 months to master. He has just completed it yesterday.
As this took him such a long time he had thought upon completing it his chakra capacity will vastly improve but reality was different. When he checked it only increased by 15% only that means he now can extract 50% of his chakra reserve. Also in the middle of this training he learned about points in the chakra circulatory system which are called tenketsu.
These tenketsu are the points in the chakra circulatory system from which chakra is released during perform jutsu and there are 361 tenketsu located throughout the body. At first these points were very small but as one begins practising jutsu they will gradually begin to expand. A shinobi's ability to use powerful jutsu is depended upon the size of tenketsu.
The tenketsu's size increases with age and it can also increase by constant practising jutsus. But it's not like practising one jutsu over and over will make all 361 tenketsu bigger for it one would have to practise various style / elements of jutsu.
As he was reading about tenketsu an idea was also beginning to form within Raijin's mind. He thought "What if I increase the difficulty of leaf sticking exercise by using a single leaf for every tenketsu." But then he shook his head and thought it was impossible so he discarded it.
After he was able to do leaf concentration exercise on his feet successfully he started on his hand seals training till now he had decided to practice individual seals separately and integrate them into his muscle memory. He would concentrate on a single seal at a time and he would only begin practice next one after he complete makes the previous one's chakra mounding instant for that seal. On average it took him one month for each seal.
Now he can perform all the twelve hand seal one after other and his chakra would respond accordingly to each seal instantly. From now on he had decided to begin practice the basic three jutsu (clone, transformation & replacement) next and his goal was to be able to do them instantly without any hand seal or shouting there name.
Raijin thought about his total chakra as he was regularly simulating both physical and mental energy for the past two years their initial value has also increased by 50%. "If my previous energies were about 100 units each then now they were about 150 units each and as a result his total chakra reserve has also been increased. If his previous total chakra was 100(physical energy)*100 (mental energy) = 10000 units then now it's will be 150*150=22500 units, my chakra has increased by more than double" thought an excited Raijin.
"If I will continue on same routine for training for the next two years till my graduation may be my chakra reserve will double and may be my chakra capacity will be finally be same as my chakra reserves which will make my chakra control perfect." Raijin muttered to himself elatedly.
It's been two months from which Raijin has decided to continue training on the same pace but he was not happy because in these last two months he noticed some alarming things. As he had already completed all the theoretical subject taught in the academy his mental energy were not getting stimulated any longer, as the growth of mental energy depends upon two things which are by age/experience or knowledge.
As he can't do anything about age or experience before becoming a shinobi only thing he can do is to learn new information. As he had already completed regular subject he had decided to search the library for addition theoretical subjects which will help him further his mental energy.
And in terms of his physical growth although he was getting stronger due to his previous routine but now no matter what he does he can't seem to increase the difficulty safely. As soon as he tries to forcefully increase them his body collapses.
At first Raijin was very worried that something was wrong with his body and he was not willing to tell this to Tadashi sensei so he decided to again research about this in the library first and decided that if he did not find anything related to this then he can only tell all this to Tadashi sensei. But fortunately after searching for a long time he found his solution in a medical scroll.
From the medical scroll he found that although one can trains intensive from young age without any negative effects on their body after activating their chakra but no matter how hard a person tries there are limits on pure physical growth for a certain age. If one trains to the extreme his /her body can and will collapse by itself. He learned that if a shinobi has train himself/herself to the extreme for a certain age and weren't able to increase their physical parameters then they should decrease that level of training to the previous level for a minimum of 1 year then try to increase the difficulty.
"So I have reached my physical limits for my age and if I want to increase then I must wait for minimum of 1 year. First my mental energy stop increasing now physical energy also stops increasing and no matter how much I try with leaf sticking exercise I can't increase my chakra control any longer. It feels like universe is against me for some reason." Raijin broods frustrated.
Raijin took a deep breath and shook his head and began pondering while tapping his finger on the desk in the library "..... What to do what to do, how can I continue to become strong, is it impossible without blood line or without any outside help. I don't have any bloodline and I also don't want to be depend upon anyone as I know that as soon as I got admitted to civillian class not any powerful shinobi will want to invest in my carrier and the proof is in the difference in then favouritism shown to the class of ninja clan kids and important civillian clan kids as I heard that they were being taught about chakra control at early age of 7 and our class will only be taught that in last year."
As he was pondering his eyes suddenly fell on the medical scroll and they widen in realisation "I can try to learn to be a medical ninja and as it was a difficult subject it must require vast amount of knowledge to be proficient in it. This will stimulate my mental energy and it must contain some powerful medical jutsu so when I will become proficient in them I can self examine and heal my muscle every day and never again I will have to wait for a whole year again." Raijin excitedly came to a decision.
"Now for physical development I have not got any choice I must wait for 1 year and now for the chakra capacity/chakra control although I had previously thought about single leaf for every tenketsu was ridiculous but as it seems I have not got any choice but to do it." Raijin sighed about thinking of the immense difficulty of the tasks ahead.
"As I have already decided to start training Ninjutsu in the afternoon after academy I must also start training in basic taijutsu and shurikenjutsu in the morning as I will be decreasing the time from my physical developments at least for the next year." Raijin decided.
"So daily routine would be first 4:00 am to 9:30 am taijutsu, shuriken-jutsu & physical training after that in the academy learn about medicine sneakily in the periods after that in the afternoon 5:00 pm to 8:00 pm extreme leaf sticking exercise and Ninjutsu exercise and finally sleep and repeat this on every day."
So with that decide Raijin took out a pocket size diary and wrote as he had no idea where he stands in terms of stats he created this information based on his own data.
RAIJIN
PHYSCIAL ENERGY 100->150
MENTAL ENERGY 100->150
CHAKRA RESERVE 10000->22500
CHAKRA CAPACITY 1%->50%