Sharingan Awakening

The slime bloodline was ultimately too low-grade. If he wanted to grow stronger, he needed to devour bloodlines to evolve and enhance his own talents.

Thus, Yu prepared to carry out the original purpose of his research: devour bloodlines himself to improve his innate abilities.

Naturally, this required some preparation. Over the years of bloodline-devouring research, he had lost quite a few slimes. If he encountered that kind of situation himself, he would be finished. While increasing his strength was important, his own safety was even more important.

For the next while, Yamashiro Aoba took them on D-rank missions every day. Once the missions were completed, Yu went straight back to the laboratory.

During this period, even Sasuke only saw Yu a handful of times.

Yu had not actually planned to conduct the bloodline-devouring experiment on himself so soon. However, since Konoha had not taken any measures against him, he now had the time to continue increasing his strength.

He was already highly proficient in slime bloodline-devouring experiments. It could be said that this was now a mature technique.

The bloodline sources he chose were, once again, Sasuke and Naruto. The two of them were children of destiny; no one in the entire ninja world possessed bloodlines that could compare to theirs.

Originally, Yu had also planned to obtain Hashirama Senju's cells. After all, no one could resist the allure of such a powerful Kekkei Genkai as Wood Release, and he was no exception.

However, he still had no good way of acquiring Hashirama Senju's cells. At this stage, only Danzo among those around him possessed Hashirama Senju's cells, but this was not something Danzo would hand over just because Yu wanted it. Therefore, he could only set aside the Wood Release Kekkei Genkai for the time being.

He had plenty of Sasuke and Naruto's cells. Over the years, he had never run out while fleecing them.

He had even refined them into cell solutions, ready for devouring experiments at any time. Over the past few years, he had conducted several experiments involving the devouring of Naruto and Sasuke's cells, but every slime used in those experiments had been unable to withstand the power within their bloodlines and had collapsed and died.

"Logically speaking, I should be stronger than these cultivated slimes. The bloodline power I can accept should be greater too, so there's a high chance the experiment will succeed," Yu said as he looked at the two cell-solution injectors before him, as though reassuring himself.

These two cell-solution injectors were the highest-concentration and best-quality samples he had refined. Now, all he needed to do was inject them into his body and begin the bloodline devouring.

It was not as though he had not considered devouring weaker bloodlines first before attempting Sasuke and Naruto's bloodlines.

However, according to his research, there was a limit to the bloodlines a slime could devour. Once that limit was exceeded, the body would collapse and die.

And he did not know what his own devouring limit was. Naturally, he could not waste precious devouring slots on low-grade bloodlines.

First, he picked up Sasuke's cell solution. Since they both belonged to the Uchiha clan, even if the concentration of Uchiha blood in his body was relatively low, their compatibility would definitely be better, and the success rate should be higher as well. Therefore, he decided to devour Sasuke's cell solution first.

"Breathe... in..."

Yu took a deep breath, steadying his somewhat flustered emotions and trying not to think about the possibility of the experiment failing.

He aimed the injector at his wrist, but it took him more than ten minutes before he could bring himself to drive the needle down.

Yu was not afraid of pain. He was afraid of failure.

"My strength is already very powerful now. I may not be invincible in the ninja world, but I'm still at the peak among the strong. So... should I really take this risk?"

Yu kept thinking to himself. After all, what he was doing was not guaranteed to succeed. If he failed, he could very well lose his life, and then he would have nothing.

In the end, Yu lowered his head. At the same time, the hand gripping the syringe pressed down, and the sharp needle pierced his arm. Then, his thumb pushed the plunger, sending Sasuke's cell solution into his body.

Yu closed his eyes throughout the process, focusing all his senses inside his body.

He could feel the cell solution begin spreading throughout every part of his body as soon as it entered.

After roughly ten minutes, Sasuke's cell solution had completely disappeared, yet Yu felt no abnormal reaction whatsoever.

He had arranged eight monitoring slimes around himself, allowing him to observe changes in his body from every angle.

But according to the information transmitted by the monitoring slimes, there had been no changes to his body at all.

"This isn't right! How could nothing happen? I can clearly feel my body devouring Sasuke's cells. Red Cat and the others personally described this process, and there's no problem with the devouring procedure either!"

Yu sensed every part of his body, hoping to find something wrong.

Special Chakra Metal Skeleton had been embedded inside his body. With the aid of the Chakra Metal Skeleton, he could see the state of his body's interior.

After a thorough inspection, he confirmed that nothing inside his body had changed. It was as if he had not just undergone bloodline devouring, but had merely received a glucose injection.

Yu opened his eyes, feeling somewhat disappointed. Based on his calculations, the odds of the experiment failing should have been infinitely close to zero, yet the reality was...

"Holy shit!"

The moment he opened his eyes, Yu cried out in shock. The visual information sent by the monitoring slimes showed that his eyes had changed.

His pupils had turned blood-red, and within those crimson pupils, a black tomoe slowly rotated.

"Single-Tomoe Sharingan."

The moment he saw those eyes, he named them without even needing to think.

The Uchiha's Sharingan was known as the number-one Kekkei Genkai in the ninja world. Yu had originally thought he would never possess a Sharingan in this lifetime.

But now... this surprise had come far too suddenly.

"Hahahaha... I succeeded... I have the Sharingan... Hahahaha!"

Yu shouted with joy.

The slimes in the laboratory also heard their god's voice. They could sense endless delight in it, and so the slimes became happy as well.

At once, an incomparably chaotic clamor erupted throughout the laboratory, like ghosts wailing and wolves howling.

Although he had only awakened a Single-Tomoe Sharingan, it was enough. Once he possessed the Sharingan, would he still need to fear being unable to improve it?

"Mangekyō Sharingan, Eternal Mangekyō Sharingan, and even the Rinnegan—I want them all! Hahahaha..."

Yu declared arrogantly.