" ren, I like your youthful spirit to challenge kenjutsu which is completely unknown field for you .. I'm sorry I cant help with your training, my youthful friend ! " dai was excited at first but his mood became worse as he realised the truth.
of course dai would be sad . he just didnt know Jack shit about swordsmanship but he was wrong actually. ren had stored every possible information from genin section in his mind so there were basics of KENJUTSU there too . there were some fancy techniques too but ren wasn't interested in them
even though the swordsmanship here in this world especially ninja village is much inclined on the usage of chakra but still ren understood that the basics of basics like kata and practice swings were the same in essence . these two were the foundation eccercises which swordsman practice even in their old age to never slack off in basics .
ren had a cheat called infinite chakra so the people who condemn him for practicing useless KENJUTSU despite him having so much chakra can die . who was ren ? he was an otaku with a cheat called invite chakra so of course he would make the most use of it with his brain .
ren can make unlimited number of shadow clones to fasten his practice but he knows after repeated simple experiments now that ren's current limit is about 150 shadow clones and that is only possible due to this abnormally strong soul . this is confusing as ren cannot understand how naruto created so many shadow clones like leaves and didnt become mentally retarded. welk he was actually a little mentally retarded from the start from ren's perspective because he actually chose to become acknowledged by the villagers who were the ones responsible for making his life shit . ren cannot possibly make such a naive choice with his practical thinking.
ren's soul is becoming stronger with his training gradually but surely so ren isn't actually worried about his limits now . simply because they will automatically break multiple times and he can make more and more shadow clones . the mental pressure from releasing these clones is no joke so ren wont take any chances and decided to slowly increase the number from 150 in future with his progress.
ren daily morning creates 150 shadow clones and assign them their tasks in groups. he himself either trains by himself or with dai while his clones leisurely practice in the uzumaki secret grounds all day till ren releases all of them before midnight .
at first his clones only practiced chakra control and fuinjutsu but today ren has made many changes . fuinjutsu despite ren's yin talent and edicted memory with sharingan active , is still a very profound and vast subject. so it wont hurt ren in near future even if he reduces some numbers of clones from it .
ren assigned the clones jobs like this -
group 1 - 1 clone ( academy)
group 2 - 39 clones ( fuinjutsu)
group 3 - 10 clones ( chakra control)
group 4 - 40 clones ( basic KENJUTSU kata )
group 5 - 40 clones ( repeated swings )
group 6 - 20 clones ( sword meditation)
just like chakra nature transformation , sword intent ( sharpness of attacks ) can be improved by repeated practice and imagination . ren thought of this idea by remembering some things from chinese novels and the wind nature transformation practice of naruto when he was in the process of inventing rasenshuriken in the anime .
the one thing that most people from naruto world cannot compete with ren is imagination . after all he has read too much fiction from earth and has too much knowledge most of which is trash though . but still ren has hundreds of different techniques of anime characters inside his mind so deriving simple insights from them to increase his own sword comprehension slowly is not that difficult. even so the process is very long and the results are slow but ren makes up for that weakness with his shadow clones .
1 shadow clone is responsible for attending the academy classes in the stead of ren . well ren has absolutely nothing to gain from the clases but you know that he has to act in front of peeping Tom hokage and danzo who is basically a child trafficker in ren's mind . it's not like everything is boring either as ren has managed to become friends with kushina uzumaki and minato namikaze. both are chibi forms and kushina is especially cute with her looks and sometimes wild temper . minato has mature thinking process so ren actually benefits from their talk on ninja culture and some random jutsu . minato of course has noticed that ren is always a shadow clone but he is loyal friend so hasn't sold ren out . ren now admires his talent and character very much but minato is still an idiot because he easily believes other people . maybe he doesn't know how to doubt or doesn't try too.
10 shadow clones are responsible for practicing chakra control . ren has mastered leaf sticking exercise , tree walking , water walking so now only practicing chakra strings and sand method is beneficial. sand method is actually just a method which ren vaguely remembered from anine . one places mutlicuored sand on their back of hand and the technique is to separate each colour sand on each fingure with only using chakra .
this game is actually really difficult and effective. the weight so sand is almost nonexistent but actually each of the 5 clour sand particles have their own different weight . so the mental focus required to separate them repeatedly with chakra control is really too exhausting. ren has made close to little progress in this method but still his chakra control improved much . as for chakra strings ? now ren can make almost invisible of them 5 each from each finger . they are strong too as ren can lift 30 kg rock with a single string . but he is still much inferior from chiyo of sand village as she is true master of chakra strings and can make hundreds of them more thinner and stronger than ren easily . well this fact only makes ren more motivated to improve..
as for swordsmanship ship , the right postures for basic techniques and unwavering swing that contains no hesitation and compressed strenght is too important and time consuming process . both of them require repeated practice daily for hours and even the sword grandmasters practice them to not forget the basics which are the foundation of their powerful attacks . so ren is no excuse to this training either and he is no better than a novice to swordsmanship too so all the more practice is needed. the shadow clones are too helpful as even though ren wont have the muscle memory from them but the insights and steady basics are more than enough ..
so basically for ren -
SHADOW CLONE === BEST JUTSU haha...