With two Kekkei Genkai abilities and a massive m increase in Chakra, Naruto was highly satisfied with the results of his experiment.
If his previous Uzumaki Physique could only be considered as inheriting the basic traits of his mother's bloodline, then after integrating the Uzumaki sequence from Karin's genes, his physique had essentially undergone an upgrade.
He had taken a massive step from a half-blood Uzumaki toward a state closer to the ancestral bloodline of the Uzumaki clan.
If he could continue to fuse more gene sequences from Uzumaki clan members, theoretically, he could even gradually approach Asura's physique.
Unfortunately, the known surviving Uzumaki clan members were pitifully few, and the only one he could think of was Nagato, who was still in Amegakure
.
But there was no rush, he had plenty of time. Besides, he couldn't just limit his gaze to the Uzumaki clan. The Senju clan, who shared the same origin, would also work.
The Uzumaki and Senju both originated from Asura. If he fused with the Senju clan, his physique could reach the level of Asura.
And now that he had the Sage Body, the Sage Eyes should also...
With this thought, Naruto withdrew his gaze from the Adamantine Sealing Chains and turned toward the sealing scroll in front of him.
As the scroll unfurled, a black, crow-shaped rune was revealed on the paper.
Naruto released the seal, freeing the crow that hosted Shisui's Mangekyo Sharingan. It fluttered its wings before landing on the back of his hand.
Naruto took a deep breath, and Absolute Control was activated once again.
Under the precise control of Absolute Control, his left eyeball began to deconstruct and restructure. The original optic nerve endings were peeled off the retina one by one, the vitreous humor temporarily liquefied, and the lens was compressed into a transparent, water-droplet shape.
Once the entire tissue structure of his left eye was cleared, Naruto removed Shisui's Mangekyo Sharingan from the crow's eye socket and placed it into the empty cavity of his own left eye socket.
The moment the Mangekyo was embedded, he used Absolute Control to seamlessly connect his optic nerve with the nerve bundle of the Mangekyo.
The nerve endings sought out each other's connection points, successfully achieving a precise connection.
The instant the connection was completed, the iconic four-pointed windmill pattern emerged on the iris of Naruto's left eye.
The crimson Mangekyo rotated in his left eye, and everything within the cave became clearer and sharper than ever before in his left eye's vision, allowing him to precisely capture even the finest textures on the distant rock walls. His vision was upgraded by several levels, and his dynamic tracking ability reached a whole new dimension.
Immediately after, Naruto sensed a power contained within this Mangekyo Sharingan. However, he did not rush to use it.
He first used Absolute Control to clear away all the restrictions that Itachi had placed in this eye, leaving behind a completely pure Mangekyo Sharingan.
Then, a piece of information surfaced in Naruto's mind.
Kotoamatsukami, hailed as the strongest genjutsu, could rewrite the target's will without them realizing it at all.
Unfortunately, he had only one Mangekyo, as the other eye was in Danzo's eye socket. He would find an opportunity to get Danzo's eye in the future.
Naruto raised his hand, and the power of Absolute Control enveloped his left eye once again.
From the sclera to the cornea, from the iris to the lens, and from the vitreous humor to the retina, layer by layer, he fused every tissue structure of this new eye with his original eye structure.
Under the intervention of Absolute Control, the Mangekyo Sharingan slowly reverted to the Three-Tomoe state, and the Three-Tomoe further reverted to blue.
The shape of the eyeball, the color of the pupil, and the curvature of the iris were all adjusted back to the original appearance of his left eye.
Having done all this, Naruto walked to the edge of the waterfall pool, and looked at his reflection in the water.
Reflected in the water was a red-haired, blue-eyed boy.
"The yellow hair turned red?" Naruto smiled.
The pupil of his left eye turned scarlet, and three black tomoe emerged from within, spinning at an extremely high speed before merging into a four-pointed pinwheel pattern.
Immediately after, his hair began to change from red to yellow.
After doing all this, the corners of Naruto's lips curled up slightly.
But soon, he felt the drain brought about by this Mangekyo Sharingan. This eye was like an insatiable black hole for Chakra, just maintaining the Mangekyo state was enough to drain the Chakra of an ordinary Jonin in a short time.
Kakashi had been exhausted just by transplanting a single Three-Tomoe Sharingan.
Shisui's Mangekyo, which carried Kotoamatsukami, consumed far more than a Three-Tomoe Sharingan.
But the one thing Naruto did not lack was Chakra. With a standard Chakra volume of three hundred Kakashis, plus the Nine-Tails Chakra within his body, this bit of consumption was nothing more than a few scoops of water taken from the ocean to him.
Speaking of Kurama, Naruto suddenly thought of something, and the corners of his lips turned upward.
Sealing Space.
"Kurama, I'm here. I brought you something fun."
Kurama was dozing on the grassland when it heard Naruto's voice and opened its eyes.
Then it saw that Naruto's left eye was rotating with a Mangekyo Sharingan it knew all too well, while his right hand was wrapped in several golden Adamantine Sealing Chains.
Kurama's two ears instantly stood straight up, and its sleepiness vanished in an instant. Its entire body recoiled and its claws raked several deep furrows into the ground.
"You... don't come over here!"
Soon, Kurama realized that if Naruto wanted to control it, he didn't need the Mangekyo Sharingan or Adamantine Sealing Chains at all.
This Mangekyo and these few chains were less like things meant to deal with it, and more like toys to tease it with.