Bab 2: Sharingan Training
" I am full. "
Sasuke said, as he waited for Shin to finish his food.
" So what's the plan today? "
Sasuke pressed his lips lightly at Shinnosuke's question, he slowly said.
" I'll train my shuriken aim, then practice fireball jutsu. "
Shin nodded, he will also train but he will do so in his genjutsu.
Genjutsu Sharingan was an innate ability of Sharingan, he will be copying the buried books using his Sharingan today, then create an illusion dream world to simulate practice sessions.
Shin will basically force himself into lucid dreaming using the Sharingan.
' Thankfully, I have created this genjutsu with Itachi, he had a lot of contribution to the creation of this technique, likely due to him having experience with his Tsukuyomi. '
Itachi had helped Shin with the creation of this technique, right down to the very last day of the massacre.
Itachi likely pondered the technique when he was on missions, as he couldn't help me with anything more due to being busy, he made sure to help me with this to the best of his abilities.
" I see, I'll be taking a rest today, I am quite tired, you don't train too long either. "
Sasuke nodded, Shinnosuke had always been the stronger one amongst the two, Sasuke won't lecture Shin on when or how to train, Shin knows his body the best.
Taking the food plates to sink, Sasuke began washing them, mandatory work before training.
Meanwhile, after washing his hands and lying down on his futon, Shinnosuke decided to test the final version of the technique, Itachi gave it to him the last day before massacre.
" Genjutsu Sharingan. Training ground. "
Shin found himself in a wide open field, looking around he bent down and touched the grass.
" It feels real, this is a significantly improved technique. I think Itachi actually made this into a weaker version of his Tsukuyomi.. "
Shin called it weaker because the time duration was one to one with the real world.
He trains here for three hours, it's actual three hours in real world as well.
" But this is fine too, I have no pressure, I can train without any hurry in this world. Opponents or environmental conditions, everything can be made. This is good. "
Shinnosuke didn't break out of his genjutsu.
It will take a while for it to be night time, he will dig out the books then.
" Right now let's train with what I do know, Firestyle fireball jutsu! "
* Foosh *
A decently sized fireball was spit out by Shin.
" I can even feel how much of my chakra got consumed by this technique, I have less than half remaining. But if I do this. "
' Refill '
Shinnosuke instantly felt his chakra had come back.
" After all, I didn't actually use up any chakra, it is all a genjutsu, adjusting my state to anything is possible. "
Shin decided that training his fireball jutsu by spamming it is the best choice right now.
" Firestyle fireball jutsu! "
* Foosh *
" Firestyle fireball jutsu! "
* Fooooosh *
" Firestyle- "
And like so, Shinnosuke kept training, getting better and better with controlling his chakra with every attempt, he didn't need to worry about his chakra capacity here, he could go all out and experiment.
After an hour and a half of spamming fireball jutsu, Shinnosuke's fireball was now bigger than before, it's not that he used more chakra for it, but his control got better.
" Let's stop here for now, I want a solid surface, wall, tree, mountain, everything. "
As Shinnosuke's demands were put forth, his Sharingan began spinning, slowly mountains, trees and walls started to grow out of the ground.
" My Sharingan is still one tomoe, so changing something big takes time, but it's no problem, I will become faster as my Sharingan gains tomoe. "
After a while the scenery had changed, and Shinnosuke decided to train his chakra control.
" Tree climbing, let's go, I have done it before, couldn't manage do water walking due to being stuck in Uchiha clan in recent years, but let's start with tree climbing anyway, just to get a hang of things. "
* Step step step *
Step by step Shinnosuke climed the uneven surface of the tree bark.
Chakra attached to the feet was good and steady.
" Let's try to run "
Shinnosuke jumped down and started imagining a really tall tree, reaching kilometres in length.
* sheuuueg *
With a loud noise the tree began bursting the ground and growing steadily, when it was growing Shinnosuke waited.
Otherwise him doing different things will put too much pressure on his one tomoe Sharingan, slowing the growth even further.
So Shinnosuke simply waited, enjoying the spectacular sight before him.
" Hashirama grew such trees daily, such magnificent sights were common for that man.. truly a god amongst men.. "
Shinnosuke didn't lack patience, he simply looked on as he imagined the day he too will be able to create such magnificent sights, not in genjutsu, but in true reality.
As Shinnosuke's practice continued, he silently thanked Itachi for this genjutsu of his.
" Tsukuyomi is a genjutsu where space time and everything inbetween can be manipulated, Itachi had shown Izumi Uchiha her entire future life with him, she was a Ninja with three tomoe Sharingan, yet she couldn't find a difference for almost a century in there. "
* Boom *
As Shin fell down after climbing high, he panted, this jutsu derived from Tsukuyomi was also absurdly real, due to it being built upon the same principles as Tsukuyomi.
" Brother really made a great jutsu, the surroundings might be unreal, but I can simulate my body completely, there is a reason Izumi couldn't find out any problems despite being a Ninja, her own body behaved exactly as it should have. "
Unless someone is in a daze, people are familiar with their own bodies instinctively, even regular people can do it, much less a Ninja with a Sharingan.
* Step *
Shin began climbing the giant tree again after a short rest.
" This perfect simulation of body is the reason I can actually train in here, it's possible because this jutsu is built upon the same principles as Izanagi and Izanami, it's a yin yang release jutsu.. "
* Huff *
" That's why it can simulate my body so well, that's why it's so draining on my one tomoe Sharingan, this is a hard-core jutsu built with the very best stuff around. "
Tsukuyomi was a Mangekyou jutsu, for copying it's abilities, Itachi had to get creative, and what better way than to look at the best jutsu available for a regular Sharingan.
" This is a genius idea. "
Shin muttered as he understood the principles behind this jutsu.
Izanagi is known to cast a genjutsu upon reality, it was actual reality warping, but it costs a Sharingan, Itachi took that connection between Yin and Yang, and kept the potential synchronisation of body and mind, illusion and reality, then converted it to the watered down Tsukuyomi Shin has today.
" Ingenious, keeping the effect of body's connection with genjutsu from Izanagi, but removing the burden of casting genjutsu on reality. "
By keeping the genjutsu world as a genjutsu world, the burden on Shin's Sharingan decreased significantly, unless he overused the jutsu, there is no way he would actually lose his Sharingan.
" The best of both worlds, I lose reality warping, but I keep my Sharingan and gain a world of genjutsu I can simulate myself perfectly in. "
Shin was happy enough with this, all he needed to do, was make sure he doesn't overuse the jutsu, or he might still risk going blind.
PERTIMBANGAN PENCIPTA 
ImagineMaker
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