3 days have passed since ren managed to convince mito and started learning fuinjutsu from her . ren's talent was enormous so mito too realizing that she had little time left , took the teaching sessions very seriously.
in fact mito wanted to make ren her live in disciple. that way she could teach him the whole day but alas that wasn't meant to be . mito was old now so she had to concentrate much to suppress the nine tails fox sealed inside her . right now the fox was much like a revengeful spirit as mito didnt have any talk no jutsu like naruto and it was too late for mito to become friends with the fox now .
kurama was being a bastard as he continuously attacked the seal . he knew that he will be sealed again inside a young uzumaki which was kushina soon so he tried his best to become free . he could not be blamed though as more than revenge , he first wanted to become free . of course fearing his power the village wont allow him though which in turn only increases his anger more .
mito was more than satisfied with ren's progress as he could now easily create simple C rank seals like chakra disturbing seal , high storage seal etc . now she didnt bother assessing ren's abnormal talent because it was a waste of time . even she was called a generation genius but only managed to create her first C rank seal after learning fuinjutsu for 2 years . her time was war time so even practiced most of the time and still it took her so much time with her talent . so ren could only be called monster .
the high ranking storage seal was a seal which not used a scroll as a medium but your own body . right now ren had one small diamond mark on each of his palm which are seals . he had created them for convenience as he could just store everything inside in future . the seals were high rank and top class so he could store anything now regardless of the item like weapons, food etc . in fact the seal was ren's original creation as he had made different compartners inside each seal to store different things separately. so his seal could be classified as B rank already .
ren managed to advance so quickly because he discovered that somehow the mental strain from shadow clones doesn't affect his concentration much . right now ren can manage to release more than 10 shadow clones at the same time and doesn't feel any discomfort . so he did so but still didnt increase the limit further because he wasn't sure that it wont affect him . he doesn't want to become mentally unstable after all .
( mc POV)
" so tempering body with chakra requires good chakra control and large chakra amount ? that's all.. aren't there any risks sensei ? " I think that there must be more to this because if not then all the jonin class ninja would temper their bodies all the time . I don't remember seeing this in anime as even might guy the taijutsu expert trained his body purely physically everytime..
" ren, of course there are limitations . first the chakra amount is not enough . the cells become stronger so to stimulate then more and more chakra is required with increasing strenght . second the chakra control is delicate . one needs to continuously manage the right chakra control otherwise there can be permanent damage to cells when your concentration is disrupted . so most of the high level ninja can only manage to temper their bodies with chakra at most one hour a day. they use it when training their bodies so the chakra depletes very quickly and with exhaustion your chakra control also becomes unstable. "
hmm.. then doesn't this mean that I can temper my body with chakra all the time ? I have infinite chakra after all so the only exhaustion I will feel is from body after extreme exercising. as for chakra control ? I only need to become proficient in it so that I can always use it passively without thinking much at the level of instinct . haha.. I can train my body to become strong like from one piece then practice rokushiki and and ...hahahaha..
fuu... calm down me ! it's not like I can definitely say that I will be able to use those superhuman techniques. but even bodies in this world are much superhuman and from my perspective even average jonin can use soru at the beginner level without injuring his legs . hmm let's see my stats first .
body strength - 2 ( low genin )
chakra - 1 ( peak academy level ) but its infinite anyway ..
chakra control - 4 ( high genin level )
I'm glad that I managed to simplify my stats easily from the information inside the previous owner's memories as I can know my progress after checking a little easily . so I need approximately 6 or 7 in body strenght to start practicing soru but 8 or more to use it freely without any worry about injuring my legs . hmm.. good . I think if I temper my body with chakra daily then I can reach 8 body strenght till the war . but still from my calculations even without chakra exhaustion, I can only maintain the right chakra control for at most an hour now before mental exhaustion will start hitting me .
anyway its good for now as I can just rest for an hour or two to recover my mental power and start tempering again . sigh .. I really want to reach kage level control fast . then everything like jutsu, seals etc will be much easier .
( 3rd person pov )
ren was lost in thoughts as he was forming his conjecture but mito didnt stop him . she knew that geniuses have their own thought process and she can only give a little advice from her experience at best to help him.
when finally ren confirmed that he can practice body tempering , he smiled and immediately took his leave . mito let him go after reminding him to practice chakra control just in case as having more of it will be extremely helpful when creating high rank seals . most of the high rank seals require high chakra control to create like single barrier seals and tsunade's creation rebirth seal .
ren of course knew this fact as he has seen in the anime tsunade mentoring to sakura that extreme chakra control was required to create creation rebirth seal . but he wasn't worried as ren planned to only solidify his foundation of fuinjutsu by creating low and some mid level swaps until he practices his chakra control to at least Elie jonin level . this would save him much time when he finally starts creating high level seals .
ren had simplified the levels of chakra capacity , control and body strenght like this..
1 - academy level
2 - low genin level
3- mid genin level
4 - high genin level
5 - low chunin level
6 - mid chunin level
7 - high chunin level
8 - low jonin level
9 - mid jonin level
10 - high jonin level
11 - low Elite jonin level
12 - mid elite jonin level
13 - high Elite jonin level
14 - low kage level
15 - mid kage level
16 - high kage level
and more ...
so it would take a very long time until he reaches kage level control . ren's talent in chakra control was below average actually but he could use shadow clones to advance faster . and from constantly tempering his body with chakra ken would receive multiple benefits. from constant concentration his chakra control will increase automatically at a steady pace and he will be able to use it at instinct level in future all the time . body will of course become gradually stronger and from the constant slow tempering of internal organs , ren's vitality will increase and his natural body healing ability will become more and more faster . the other good thing is that this way ren's chakra will become denser and increase gradually with his body becoming stronger. so with these many benefits ren would be an idiot if he doesn't use his cheat infinite chakra to temper his body ...