Thus, after suffering a major loss at the hands of the Light Organization Light Organization, Konoha temporarily suspended its harassment of them. Although Aizen and his group didn't care much, their experiments could proceed more smoothly without interference.
For example, right now, in a remote valley within the Land of Rivers, Aizen is conducting a very serious and rigorous physical examination on Uchiha Ryuko and Uchiha Seika.
The goal is to allow the two pairs of Mangekyō Sharingan to fuse in the most perfect way.
In the original work, it is not explicitly stated how the Eternal Mangekyō Sharingan was obtained, so Aizen had to be extremely careful.
Because the Mangekyō Sharingan is extremely rare, and especially Mangekyō belonging to a close relative, if something were to go wrong, their loss would be immense.
Therefore, in order to prevent any accidents from happening during the experiment, Aizen even sent a message to his real self Kōki, who was more skilled in Medical Ninjutsu, asking him to try to find an opportunity to come over.
He is currently preparing for the Mangekyō fusion project, which will officially begin once Kōki arrives.
"Is what you're doing now preparing you for obtaining a higher level of the Mangekyō?" Uchiha Ryuko, powerless to resist, asked, lying on the operating chair and watching Aizen bustling around.
He knew that Aizen and the others would not do anything pointless; the fact that they were examining his body was definitely in preparation for the next experiment.
"That's right. What's wrong, Ryuko- san? Is there something you want to say?" Aizen didn't hide anything from this question and answered directly.
"I'd like to know, regarding what you said before about the perfect eye on the Mangekyō, is it necessary for the eyes of two brothers to merge to achieve this? Did you awaken Seika's eye as well?"
Although he was bound by Aizen and the others, Uchiha Ryuko.
He deduced from Aizen's previous actions and the secrets about the Mangekyō Sharingan that to obtain the perfect Mangekyō Sharingan, one must have another pair of eyes transplanted, which meant that his younger brother Uchiha Seika, had likely also obtained the Mangekyō.
Upon hearing Uchiha Ryuko's question, Aizen's eyes flashed with surprise. He hadn't expected Uchiha Ryuko to be able to analyze this, but he didn't deny it and directly admitted it.
"Indeed, Ryuko -kun, I must say that you and your brother are both very talented. With just a little stimulation, you Mangekyō Sharingan. In terms of talent, you two can be considered among the best in the current Uchiha Clan."
In a different situation, if someone praised his younger brother Uchiha Seika, he would be very happy. But in this case, such praise would only make him feel helpless and desperate.
Now he realized that everything he had done had been meticulously planned by the enemy, leaving no room for error.
"And what about my brother? Is he still alive?" Uchiha Ryuko couldn't help but ask, still worried about his brother's condition.
"He's still alive. If you cooperate well with us in the fusion experiment, I can promise to let him return to Konoha alive and live as an ordinary ninja."
I'm sure you know that, to us, the Eternal Mangekyō Sharingan is more valuable than your brother, so if you want your brother to live, you'd better behave.
Of course, it's fine if you don't want to cooperate; it just means we'll have to put in a little more effort. Anyway, even if you're gone, your brother is still here. Either of you can be used as a base for fusing the Mangekyō Sharingan. It's just that at that time, neither of you will be able to leave alive.
Therefore, it all depends on whether you're willing to let us get what we want sooner. Remember, your brother's life is in your hands.
When Aizen sensed Uchiha Ryuko's worry for Uchiha Seika, he thought of a way to make Uchiha Ryuko obey, and he believed that the possibility was very high.
" The Eternal Mangekyō Sharingan? What a fitting name!"
Faced with Aizen's threat, Uchiha Ryuko did not respond directly. He simply praised the name of the Eternal Mangekyō Sharingan and then fell silent.
But his behavior caused a glint to flash in Aizen's eyes.
Because he knew that Uchiha Ryuko had started to consider this matter, and he was tempted.
Otherwise, he could have refused directly instead of remaining silent.
However, upon further reflection, it's quite normal for Uchiha Ryuko to consider this. After all, he and his brother were already fish on the chopping block, Aizen was the one holding the knife. They had absolutely no chance to resist. They didn't even have the ability to perish together with Aizen and destroy the Mangekyō Sharingan, so how could they possibly fight against Aizen?
Therefore, if Uchiha Ryuko a smart person, he would know what the most sensible thing to do right now is.
After pondering for a long time, Uchiha Ryuko spoke, "How do I know you won't go back on your word?"
"There's really no way to guarantee that, but you can only trust us. Trust that we'll let your brother off the hook."
Yes, what can I do? I was the one who got captured.
After listening to Aizen's words, Uchiha Ryuko sighed inwardly. Now, he could only place his hopes on the mercy of Aizen and his group.
"I need to see my brother. The real kind, not your Genjutsu. Even if I can't cause you any real harm, I can at least slow down your progress."
Aizen simply smiled faintly. Uchiha Ryuko's threat was meaningless, merely a verbal sparring match. Nevertheless, he was still willing to give Uchiha Ryuko some face.
After all, if the Mangekyō Sharingan fusion goes smoothly, then Uchiha Ryuko might become one of them in the future, which can be considered as a reward for him.
"Alright, Uchiha Seika will appear before you soon. But I must remind you, the more you say, the more Uchiha Seika will know, and you should understand the consequences."
This silenced Uchiha Ryuko once again. He understood Aizen's meaning and knew that if he really wanted Seika to return to Konoha alive, it would be best to keep him completely ignorant.
At the same time, he breathed a sigh of relief, because Aizen's words meant that they really intended to let Seika leave.
"I'll just glance at him, just to know he's still alive."
Aizen nodded and walked to the side. Not long after, Jörmungandr brought the badly injured Uchiha Seika to Uchiha Ryuko.
Seeing that his younger brother was indeed alive and well, and finding nothing amiss, Uchiha Ryuko smiled with relief and nodded.
Therefore, Aizen and his team's inspection work proceeded more smoothly thereafter.