The Idea of Fusing Three or Even Four Mangekyo

A wooden ceiling, blood-stained tatami mats, and bright moonlight shining through thin paper windows into the room, bringing a sliver of light to the dim surroundings.

"Cough... cough..."

Sasuke struggled to open his eyes, feeling as if his head were splitting apart. Every slight movement of his body brought waves of intense pain, making it difficult to even shift. He began to roll his eyes, observing the situation around him.

The wooden ceiling, the dim moonlight, the thick and lingering scent of blood filling his nostrils, and the faint sound of footsteps fading away on the wooden floor outside the door behind him.

This is the best-case scenario.

Obito should be on the eaves of another building in the distance by now, and the area around this room has already been cleared by Uchiha Itachi.

This is my best chance!

In his past life, whether in the anime, manga, or official novels, the scene of the Uchiha Clan Massacre was repeated over and over again. Out of the 720 episodes of the anime, perhaps 20 were just filler dedicated to this arc.

Compared to this blatant, insane behavior of padding the story with flashbacks, the web novel authors he used to read were mere amateurs.

However, filler is filler. While the general plot remained consistent when depicting the massacre, there were discrepancies in the details—for instance, the death of Uchiha Itachi's lover, Uchiha Izumi, which differed across the anime, manga, novels, and side stories.

Then there was the version where Sasuke, after being hit by Tsukuyomi in his room, fled in terror, only to be chased down and beaten again by Uchiha Itachi; that scene never showed Sasuke awakening his Sharingan before the flashback ended.

There was another version where, after Sasuke fell unconscious from Tsukuyomi, Uchiha Itachi simply left. Sasuke then woke up and chased after him, awakening his Sharingan at that moment, only to be beaten again before the flashback ended.

After entering this room, Sasuke had deliberately steered events toward the latter scenario.

His mind raced like lightning as he slowly used his hands to push himself up. He didn't have much time; the door behind him was already closed, and this was his only chance to obtain the Mangekyo.

He knew Uchiha Itachi had held back, otherwise, he wouldn't have been able to wake up at all. According to the progression of events, he should wake up within a few minutes, then chase after his brother to play his part in the scripted drama.

No sense of being watched.

He walked with difficulty toward the tatami mats. The waves of blood-scent stung his nostrils. Looking at the two corpses on the floor, Sasuke felt a pain like a knife twisting in his heart. His breathing hitched, and a sharp, intense stinging sensation surged from his eye sockets into his brain.

His head throbbed even more violently. Tears mixed with streaks of blood dripped down the boy's face, falling onto his neck and collar.

Sasuke tried to control himself, but found he couldn't. He sighed inwardly and let it happen.

He opened the scroll, took out a katana, produced a bottle of saline solution, and put on a pair of transparent gloves. Looking at the two faces on the floor—peaceful, seemingly without pain or resentment—Sasuke felt a sharp pang in his heart, and his raised hands trembled slightly.

No more stalling!

Sasuke gritted his teeth, hardened his heart, and reached toward their eye sockets.

Squelch!

More blood-tears streamed down Sasuke's face, even showing signs of turning a deep, dark black. His originally deep, dark pupils had long since transformed into the scarlet, menacing Three Tomoe. But the boy ignored the stinging and the changes in his eyes, gritting his teeth to finish the task at hand.

He placed his parents' Sharingan into the storage scroll, destroyed the transparent gloves, and forced himself not to look at the corpses on the floor.

He had used the transparent gloves, so he shouldn't have left any fingerprints. He had six storage scrolls on him, each with ten item slots. 23 were empty, while 37 were already sealed with various ninja tools like Fuma Shuriken, kunai, wire, and the katana.

If someone were suspicious of him and managed to find that specific katana among the 37 items, and then saw through his disguise on the hilt, he would just have to accept it.

This was the best he could do. But who would suspect that a boy who had just suffered the trauma of his entire family being slaughtered would do something like this, and with such elaborate precautions?

After finishing everything, he pulled out a strand of his hair and placed it at the opening of the scroll; if anyone opened it, he would know.

Sasuke took a heavy breath. A minute and a half had passed. He still had to go and play his part in the unfinished drama with his brother.

Walking to the door, Sasuke couldn't help but turn back to look at the corpses one last time, sighing inwardly.

Perhaps after losing their Sharingan, their bodies were spared the desecration of being used as experimental subjects, but wasn't his own action just another form of desecration?

I'm sorry...

But to become stronger, I must do this.

He then ran out without looking back.

Pulling his mind back from the memory, in the dim room, Sasuke looked at the saline bottles containing the two pairs of Sharingan. His emotions gradually settled, returning to calm.

After putting in so much effort and trouble to obtain one of the world's greatest treasures, his mind had momentarily wavered, and he had lost his composure.

Sasuke frowned. He was not a person who acted on impulse or was easily swayed by emotion, but after returning home and sensing that no one was watching, he had been unable to wait to open the scroll and confirm the state of the Mangekyo Sharingan.

Upon confirming it, he had even let out that strange, arrogant, low laugh.

Was he still being influenced by the personality of this body?

Or was this a unique flaw of the Uchiha clan?

As he pondered, Sasuke calmly put the items back into the scroll. These two things would be of great help to his future, perhaps even determining whether he could reach the pinnacle of this world.

After all, these were his parents' Sharingan, the necessary components for him to evolve into the Eternal Mangekyo. In a sense, the blood connection between parent and child was even closer than that between siblings.

If two pairs of Mangekyo fused to create an Eternal Mangekyo, what about three pairs?

What about four?

Could they evolve into the Rinnegan?

Or perhaps a super-Sharingan that was not inferior to the Rinnegan?

His mother's Sharingan was only Three Tomoe, but there were so many strange things in the ninja world; there might be a possibility of them evolving into Mangekyo in the future.

If that happened, and he awakened his own Mangekyo, he would have three pairs of Mangekyo in his possession.

However, there are two points that need to be considered: can three pairs of Mangekyo be fused together?

After all, in the original story, the most that ever occurred was the fusion of two pairs of Mangekyo, and as for three pairs, it had never appeared, so it is unknown if it is feasible.

Another point is that whether it is his mother's Sharingan or his father's Sharingan, to Sasuke, they are both blood relatives.

But his mother and father were not blood relatives; although they were husband and wife and of the same clan, they were not siblings by blood.

Sasuke should be able to fuse with the Sharingan of either one of them, but the Sharingan of those two individuals cannot be fused with each other.

Can he use himself as a medium to fuse the Sharingan of the two?

This remains to be verified.

As for the fourth pair of Mangekyo...

Thinking of Uchiha Itachi, the expression in Sasuke's eyes shifted slightly.