About the method of fusion of two pairs of Mangekyou Sharingan into a pair of Eternal Mangekyou Sharingan and key points related to it, Kuroto isn't really sure how it's achieved, because there is not much information available in regards to this that Kuroto can use for reference.

After all, there were only two people shown to have ever awakened Eternal Mangekyou Sharingan, and they were obviously Uchiha Madara and Uchiha Sasuke. ​​

In Uchiha Madara's case, close to nothing but speculations are known about Uchiha Madara and Uchiha Izuna's Mangekyou Sharingan abilities.

Senju Tobirama may have stated that he has seen Amaterasu before, and even if we assume that Amaterasu was related to Uchiha Izuna, but there is no hard evidence to prove whether that speculation is indeed correct or not.

Even the techniques Uchiha Madara had after awakening the Eternal Mangekyou Sharingan are unknown.

Therefore, the only one Kuroto can refer to is the Eternal Mangekyou Sharingan of Uchiha Sasuke.

Itachi's Mangekyou techniques were Amaterasu and Tsukuyomi and before his death, Itachi used Transcription Seal to seal Amaterasu in Sasuke's Sharingan for it to be activated the moment Sasuke sees the so-called 'Madara's Mangekyou Sharingan.'

And coincidentally enough, Sasuke awakened Amaterasu as one of his Mangekyou Techniques.

Although Sasuke's awakening was also related to his hatred and intent to destroy Konoha, the fact that he specifically awakened Amaterasu couldn't have been just because of his hatred!

Of course, Kuroto isn't sure whether this conjecture of his is correct or not but it could be true as there is no evidence to deny this possibility!

So, there is a possibility that Itachi's sealing of Amaterasu in Sasuke's Sharingan played some role in Sasuke's awakening of Amaterasu.

Therefore, we can consider that the Transcription Seal might have some degree of influence on the Mangekyou Technique of an awakener.

And if this conjecture is true only then can Kuroto make the choice.

Kuroto has decided that he would choose Daikokuten of Hideki's Mangekyou Sharingan and Yaoyorozu of Ryota's Mangekyou Sharingan.

The idea is to seal Hideki's Daikokuten into Ryota's right eye using the Transcription Seal.

In this way, it may be possible for Ryota's right eye to gain the technique Daikokuten of Hideki's eye at the time of awakening Eternal Mangekyou Sharingan.

As for the original ability of Ryota's right Mangekyou which is Amatsuhikone?

Kuroto feels that although this technique is also incredibly useful, it is would be relatively unnecessary for him, after all, he already has Ryuumyaku with him so Kuroto wouldn't be facing problems of chakra shortage as far as he could think and Kuroto still finds Daikokuten to be more useful with more potential compared to Amatsuhikone!

"Therefore, Daikokuten and Yaoyorozu are the most optimum choices!" – muttered Kuroto while walking towards the other room of his secret laboratory.

This room was only recently created and was equipped with all sorts of medical devices, additionally reinforced walls and surroundings with complicated sealing combinations capable of completely destroying the room instantly if Kuroto desires so.

Although it is said that the room is equipped with all sorts of medical devices but in actuality, not much is present here of significant importance.

There are only two large nutrition tanks equipped with a complete life support system.

The people inside the large nutrition tanks are none other than the Uchiha brothers who were being tortured by Kuroto until not long ago.

After the previous battle, Kuroto gouged the Mangekyou Sharingan of both the brothers coupled with irrecoverable injuries they suffered during their time in prison cells, and in the following battle, both of them are in a deep coma and would have died within minutes if not for Kuroto to keep them alive using the life support system.

But even Kuroto knows that although they are alive, their bodies and spirits are beyond exhaustion and will never experience true recovery as such they won't ever be able to get back to their peak state.

Therefore, ideally, both of them are useless more so given the fact that Kuroto has stolen the eyes of both of them so they should be disposed of as early as possible to avoid any risks but Kuroto wants to keep them alive a little longer.

And to not be careless, he has made sure to put seals all over their body including their blood, therefore, Kuroto can be sure that let alone breaking the seal? They wouldn't even be able to blink their eyes unless Kuroto orders so!

They are also being continuously injected with Anesthesia so would always be staying in a coma unless Kuroto feels the need to wake them up.

There are many reasons Kuroto kept them alive, first is obviously to show that he will always remain grateful for both of them that they 'volunteered' to be tortured and 'willingly offered' their Mangekyou Sharingan to Kuroto as such they must suffer less pain from here on until their eventual death.

After all, Kuroto is not a 'lunatic' or a 'madman' who has a special interest or takes pleasure from torturing his captives, right? So, there is obviously not much reason left for him to torture these two anymore.

The second reason is obviously that their use has not ended yet.

Until he finally obtains the Eternal Mangekyou Sharingan, it would be best to keep both of them alive for convenience's sake as Kuroto could need their further 'assistance' in the fusion process.

Nodding to himself, Kuroto left the room where the two Uchiha would be living their last days and returned to the main lab while thinking, 'It would be best to learn Transcription Seal before the fusing the two pairs of Mangekyou into Eternal Mangekyou!'

Based on the two known instances of Transcription seal being used, it was used by the people of the Uchiha Clan being Madara and Itachi indicating that the Transcription Seal was undoubtedly developed by the Uchiha Clan, so if Kuroto wants to learn Transcription Seal he can only obtain information about it from the Uchiha clan!

But that aside, what Kuroto must do at the earliest are not the Mangekyou Fusion or learning Transcription Seal.

Kuroto's current top priority is something else.

The top priority right now is to clear up the suspicions on Shisui being Homusubi, the matter of learning the Transcription Seal, Eternal Mangekyou Sharingan, cultivating the Fire Clone body with Uchiha Clan DNA and all can be done at a later date, but suspicions on Shisui must be resolved first so the restrictions imposed on him will be cleared up.

With this thought, Kuroto sat on a chair and devised the outline of the next plan he is going to be using to achieve this purpose.

While thinking he can't help but let out several yawns one-after-another…

Honestly, Kuroto is a little tired after tonight's ordeal. It was only due to the Adrenaline rush because of the excitement of obtaining two pairs of Mangekyou Sharingan that he did not notice it until now but now that this excitement has subsided, the exhaustion has taken over so Kuroto closed his eyes and took a temporary rest to recover his spirits and counted all the gains from the Uchiha Brother Torture arc.

After a short rest of an hour, Kuroto took a deep breath and unfolded the latest outlined map to plan out the next course of action.

Being an Anbu has many perks and this task where Team-11 was responsible for monitoring the entire hunting operation of Amatsukami allowed Kuroto to be aware of all the routes that were being used, are being used, or will be used in the future.

Therefore, it is very easy for him to find the safest and most effective location to bring Homusubi into public sight.

…

Next Morning,

Uchiha Clan Grounds, Shisui's House.

Similar to the past few days, Shisui was doing some practice in the training range in the backyard training range of his house.

Although he is under House Arrest under Patriarch's order, Shisui is allowed to carry out his training in the backyard to keep his skills rust-free.

Tuk… Tuk… Tuk… Tuk… Tuk… Tuk… Tuk… Tuk… Tuk…

Amidst the sound of shuriken piercing the wooden targets, Shisui who was flipping in the air slowly landed on the ground with his back facing the targets.

Turning around, Shisui glanced at the several targets placed at different angles and distances from his position and was happy to find that all the shuriken he threw were piercing the center point of the targets, and the corners of his lips curved in a proud smirk!

Even in the Uchiha Clan, not everyone can use such meticulous and precise Shurikenjutsu therefore Shisui's mastery and skills in Shurikenjutsu are undoubtedly recognized as the best within the clan.

Of course, Shisui will feel some pride about this.

Clap-clap-clap-clap…

At this time, the sound of clapping was heard from the other side of the training field.

Turning his head towards the direction from where the sound of clapping came, Shisui said with a smile, "Itachi, you are here!"

"Yes, Shisui-san…" – Itachi nodded.

"Oh-oh, Shisui-san, I… I am also here!" – a small figure that sprang out from behind Itachi said.

Shisui quirked his eyebrow and spoke with a sly grin, "Ara, Sasuke you are here too? I am really sorry Sasuke; you are just too small that I was unable to notice you a moment ago…"

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Read up to Chapter - 473 on P.a.t.r.e.o.n. Page: p-atreon.com/Milta_translations