ren was feeling too excited now because with awakening of his sharingan his theory completely proved right that he could awaken the bloodline limit powers aka kekke genkai and so on . the surprise wasn't this much though as he also discoverd that due to his abnormally powerful soul , any power or jutsu closely related to mind power was too easy to comprehend for him . this means that ren will advance in fuinjutsu and genjutsu relatively with small amount of effort and can focus on taijutsu and ninjutsu wholeheartedly.
this discovery made ren too happy . because he having a cheat of infinite chakra can produce shadow clones to practice seals all the time as even with his absurd comprehension talent , the further level of seal mastery , the time required for breakthrough is too much . the reason being that there is too much information to remember and seals can only be perfected by continuous success and failures.
if fuinjutsu wasn't this difficult then due to its usefulness and popularity, almost all the ninja would become fuinjutsu specialists . minato was really a genius but our ren is more than a few times more genius than him - only fuinjutsu though .
with awakening sharingan vague information about the new powers ren can use was also suddenly delivered inside his mind . it felt like ren always knew these powers . bloodline information is really mysterious as the new powers keep on unlocking automatically with further advancement. no wonder the bloodline users like uchiha become arrogant as their powers are really a cheat which others can only be envious of .
ren walked towards the waterfall and saw his eyes reflection which made him grin . instead of his black eyes , his colour changed to dark red whith circular patterns in each eye . one small dot called tomoe was present in each eye but ren wasn't bothered as from the sudden information inside his mind ren now vaguely understands that he can reach mature sharingan which is 3 tomoe each by practicing gradually. many uchiha cant reach 3 tomoe sharingan in their lives because their bloodline is simply too diluted or impure which is not a problem for ren as no present uchiha can compete with him in purity of bloodline . ren knew from the anime that indra bypassed mangekyo sharingan and straight awakened eternal mangekyo sharingan which assures ren that maybe he will do so too as ren's bloodline now is much purer than even itachi the genius of uchiha .
well honestly ren doesn't really want to awaken eternal mangekyo sharingan if he has to kill or witness death of his close friend who is currently only dai . ren thinks that maybe he wont succeed in awakening eternal mangekyo sharingan only by using powerful genjutsu to see fake death of dai because his bloodline is purer and powerful . well it's the story of far future anyway ..
ren has information about some simple sharingan genjutsu in his mind now with much powerful dynamic vision but ren is much more excited by the edicted memory he has gained . ren wants to study various jutsu of this mysterious world which is too much information so with his memory now he will never forget anything he saw with sharingan and reduce the time required to read info .
now with his clones using sharingan, the study of various runes and fuinjutsu related enormous information can advance much faster than before. but there was a small drawback that ren has yet to train his sharingan so it consumes too much chakra right now to maintain . ren of course has no problem with his infinite chakra but that is not the same for clones as they only have limited chakra in them . but this problem has an easy solution which is to keep his sharingan activated all the time to completely reduce the chakra cost to almost nil . so now ren's priority is to buy the eye lenses as he has to hide the fact that he has the sharingan from especially uchiha clan and danzo.
now ren's vision has improved too much when compared to before. with awakening his sharingan, ren's passive sensory range has increased to 250 m and his maximum chakra sensory range is more than one and a half kilometers. seriously his yin release related powers have improved too much with uchiha bloodline without much effort . the problem is that the sudden enhanced eye vision is really uncomfortable as he can suddenly see much far way and due to the dynamic vision , everything seems to moving in slow motion . ren has to quickly get used to this change as once he deactivates his sharingan then his vision will return to normal and in battle this moment of distraction can be proved fatal. but ren's sensory talents are huge help in this case because his sharingan's maximum range is only about half of his maximum chakra sensory range . further from that ren's vision become less and less clearer so getting used to this change will prove much easier now.
the most important thing is that ren even though cannot copy the fast movements of dai with a glance due to the limitations of 1 tomoe sharingan which is like an infant compared to mature sharingan , dai being his friend can help him by slowing his speed a little so that ren can copy every technique to its core meaning body movements and chakra circulation . ren is sure that dai wont refuse him in fact he will gladly oblige. so ren now quickly wants to help dai too and he has some ideas to make dai stronger so that he doesn't have much need to rely on 8 gates technique everytime. the drain of using this technique is too much and will leave dai completely exhausted . war is coming and ren does not want to something happen to dai after all . ren plans to quickly train his body to 8 level and start practicing soru with dai . dai is a taijutsu genius so sure they will master the technique in less time by discussing together . and till the war ren wants to make sure that both of them at least have time to master basics of geppo . they can escape through sky with it and most importantly ren wants dai to improve so much that village promotes him from eternal genin by showing his powers . those two chunin that dared to insult dai will have no choice to respect dai then including many others too .. hmphf!