ren after reading the old scroll containing the rakshasa blood body tempering technique, immediately store it including all the other books in the shelf without looking at them .
these were now all his possessions so he definitely could view them anytime. besides ren being a loyal friend and brother to dai cannot control his excitement right now . the weakened or flaw of the rakshasa technique is apparent - loss of lifespan and sanity !
but if one thinks properly then its understandable as after practicing this technique the physique of the practitioner practically changes to pseudo demon as human bodies that dont have much inherent potential from the start cannot bear the burden from sudden increase in explosive hidden muscle power beneath the skin which become strong like iron .
but ren has the perfect solution which will absolutely negate these drawbacks with ease . of course if we are talking about mc then his most valued cheat will be - infinite or unlimited chakra . as for why this chakra is considered the solution to these huge drawbacks? simple because it's my novel and everything I write is possible! just kidding ..
everybody knows that if one absorbs too much natural energy from toad mountain then their bodies will permanently become stone toads and they die . this rakshasa technique is also similar to that . the bodies of high rank chakra beasts naturally absorb the heavenly energy in atmosphere to grow stronger in time even if they dont possess intellect and dont cultivate sage powers.
thus this technique which absorbs the esence from their blood is also like cultivating sage powers but in a more simplified way . the demon that invented this technique was a genius as he made the technique so that the user starts transforming his body into that of a pseudo demon from the start unlike the pure natural energy which is only disastrous after inability to find the right balance with chakra and inability to stop the absorption in time .
now if the user already was destined to transform his body constition from the start then there was no issue of dying . but there is no free lunch in this world so there are the extreme drawbacks of loss of lifespan and sanity in time . but this problem can be solved easily if the blood of beasts is purified during the process of absorption . these drawbacks occur as a side effect because the raw power in the blood esence of beasts is much stronger than humans with weak bloodlines . but ren already knows that while absorbing a foreign bloodline into the body, it will not harm the user if the loss of vitality is compensated with never ending supply of chakra .
ren knows that he can never help other transform their bloodlines with his chakra but this technique is different. it's because ren has no need to worry about circulating the chakra on controlling the flow at all . as the technique can only be practiced with its unique circulation method . ren just needs to place a hand somewhere on dai's body during blood essence absorption and continue pumping chakra at fast speed to ease the process by supplying the raw blood essence cells with enough food ( chakra) so that they dont start eating dai's original cells which would cause the loss of lifespan ( vitality) and sanity from the powerful genes of beasts that are in general different from humans thus incompatible with the body. with ren constantly supplying chakra , the transformation of body will be complete more quickly in a full demon not a pseudo demon .
demon physique is way more trynaccal than chakra bests from the start causing them berserk emotions and less intelligence according to the description in manual . so if dai can successfully transform his body closely related to that of a demon then the loss of sanity due to incompatibility with beast blood essence will never be an issue at all.
thus ren is too happy for his youthful brother and he wants nothing right now except grab the blood of a S rank beast and help dai absorb it using this badass technique immediately...