Ren had already arrived at the edge of Konoha.
The reason I suddenly felt like experiencing Tsukuyomi was mainly because of its name.
As descendants of the Otsutsuki clan, the Uchiha clan's Mangekyou Sharingan techniques Tsukuyomi and Infinite Tsukuyomi are unrelated; that would be a complete joke.
The name of the Dōjutsu wasn't something I chose myself; it was information I automatically acquired when I awakened the Mangekyō Sharingan.
At this moment, Ren is trying to explore the Tsukuyomi World.
By comparing his memories bit by bit, he discovered that the Tsukuyomi World was exactly the same as the Konoha in his memories, except that there was no one there.
They continued flying outwards, towards the same vast forest that Ren remembered.
After flying in a direction he had never been before for a while, Ren witnessed a magical scene.
Upon reaching the edge of the forest, Ren continued flying forward, entering a dark red world. The entire world resembled a black and white photograph, with only a giant blood-red moon hanging in the sky.
There is a Sharingan on the moon, and it is exactly the shape of Itachi's Mangekyō Sharingan.
???
Ren then returned the way he came and soon found himself back in the forest. Looking ahead, he saw the normal world again, with even white clouds drifting in the sky.
After several attempts, Ren found the critical point.
Standing before the critical point, gazing at the boundless horizon, Ren knew it was just a backdrop.
Continuing forward will lead you into the true Tsukuyomi World, a small world where you can see the end at a glance.
Over the next period of time, Ren explored the entire Tsukuyomi World, found its various boundaries, and thus determined the size of the entire Tsukuyomi World.
It's basically Konoha and the surrounding small area.
Based on his own eye power consumption, Ren calculated that if he really wanted to replicate the entire Shinobi World, he would probably have to harvest all the souls in the entire Shinobi World to achieve it.
This doesn't even include humans and other living beings.
Subsequently, Ren lost interest in the Tsukuyomi World, since it was merely Mangekyō Sharingan Dōjutsu, far inferior to Infinite Tsukuyomi.
Ren remembers that the Infinite Tsukuyomi allows each person to have their own exclusive world, which not only doesn't require ocular power to maintain but can also recycle Chakra.
In the following time, Ren did not stay in the world constructed by his own eye power, but entered the Tsukuyomi Space constructed by Itachi.
He carefully observed everything in this space.
In Ren's mind, the difference between Tsukuyomi and Infinite Tsukuyomi is like heaven and earth, but even this ridiculously weak Tsukuyomi...
It's far more advanced than Ren's own Dōjutsu.
To put it bluntly, Dōjutsu are still just techniques. Thinking you can learn Tsukuyomi by just watching for a while is wishful thinking.
However, as a lower-powered version of the strongest Genjutsu, Tsukuyomi, watching it more often can improve one's Genjutsu technique skills, so the remaining time cannot be wasted like this.
If he could, Ren would like to end this Tsukuyomi journey, but he doesn't have control over it.
Itachi, who had control over the situation, was short of money and unwilling to waste his eye power on such a meaningless matter.
More than 50 hours passed, and Ren felt the entire space shake, knowing that the time had come.
While Tsukuyomi can control time, it has its limits and cannot be extended indefinitely.
With the shattering of the Tsukuyomi World, Ren and Itachi returned to the outside world simultaneously.
The long 72 hours were not only filled with nothing for Ren, but Itachi was also incredibly bored.
Having spent three days and three nights in an empty Konoha, Itachi had nothing to do but think about all sorts of things, and he noticed many inconsistencies in what had happened earlier.
Therefore, after regaining consciousness, Itachi's eyes returned to calm.
When Ren saw Itachi's expressionless face again, he knew that Itachi had also figured something out.
Just to be on the safe side, Ren decided to test it again.
The Sharingan swirled, and a Sasuke Uchiha wobbled and flew in front of Ren, staring intently into Itachi's eyes.
Without saying a word, Ren pierced his chest again.
Itachi maintained his poker face, but his eyes betrayed him.
Even though he knew in his heart that it was fake, all his senses told Itachi that it really was Sasuke Uchiha, and Itachi could never calmly accept it all.
Seeing Itachi's expression remain unchanged despite a slight change in his eyes, Ren couldn't help but feel a sense of admiration.
As expected of Itachi, he's definitely not a normal person.
"Very good, Itachi, you have finally overcome your greatest weakness. You truly deserve to be called a genius who surpasses Shisui and me."
After the routine, uninforming, and unconvincing praise, Ren continued with his question.
"So now, are you still worried that they won't take your abilities seriously?"
Itachi couldn't understand why Ren knew that Sasuke Uchiha was his weakness, and Itachi himself only truly understood his own feelings tonight.
However, this made Itachi realize even more how powerful Ren was, and not just in terms of physical strength.
"There are no problems, Lord Hokage."
Having received Itachi's answer, Ren still asked one last question.
"You will become Konoha missing-nin, your former comrades will hunt you down, your family, including Sasuke Uchiha, will despise you. Are you still willing to accept that, Itachi?"
Itachi didn't say anything, he just nodded solemnly.
Ren suddenly realized that Itachi was actually quite good. It turns out that everyone has their own use, and Ren might not have been willing to send someone else.
Itachi is just right.
So Ren continued to shower Yuuki with compliments, without any hesitation.
"Itachi, you are a ninja who truly inherited the Will of Fire, and at such a young age you already possess the mindset of Hokage. The reason I'm entrusting this mission to you is because I value you!"
Itachi remained unmoved, and Ren showed no embarrassment, continuing his speech.
"We'll set off late tonight. Go home now and check on things. Aside from Fugaku- senpai, don't reveal yourselves to anyone else!"
After hearing Ren's words, the usually expressionless and aloof Itachi finally broke his silence and replied with his head down.
"Yes, thank you, Lord Hokage!"
Itachi left.
After Itachi's figure disappeared from Ren's sight, Ren said softly.
"Come out, I've sent you the two strongest ninjas from Konoha!"