For a true Ōtsutsuki, the Byakugan and the Rinnegan different things. The Byakugan is something one is born with, and it upgrades as one levels up.
The other is the mutation of external energy, which can only be upgraded again by constantly absorbing the same energy.
"But I'm Uchiha!"
Uchiha Makoto could barely suppress the smirk of his lips.
The Rinnegan of the Ōtsutsuki is a mutation caused by external forces, but my Sharingan is innate!
"Plus, I have the Ōtsutsuki genes that I naturally possess, so no matter what, the Byakugan is my own!"
"Ultimately, all of this stems from the fact that the power of the Ōtsutsuki itself is so great that it surpasses the God Tree, thus hindering the development of the Rinnegan."
"I evolved from the Ōtsutsuki bloodline, the manifest representative of the God Tree's power. In addition, the Ōtsutsuki bloodline is not very strong. Under these multiple conditions, the two have achieved a harmonious situation!"
Uchiha Makoto had no interest in any of this and turned to look at the system.
"System, open the system panel!"
[Name: Uchiha Makoto
Age: 17
Kekkei Genkai: Ōtsutsuki Bloodstain (Thin)
Skills: Fire Style: Fireball Jutsu, Phoenix Sage Fire Jutsu, Phoenix Flower Claw Crimson, Majestic Destroyer Flame, Shuriken Manipulation Jutsu, Chidori...
Strength: Six Paths Level
Clan: Uchiha Clan
Level: Six (61000/1000000)
Points: 8000
Item: A-grade deduction card *1
"Only ten thousand more?"
Seeing that his level progress had only increased by 10,000, with one million still a long way off, Uchiha Makoto clicked his tongue, somewhat helplessly.
Unless he becomes the Ten-Tails Jinchuriki, it's almost impossible for him to make leaps in his training after reaching this level of strength.
"If only we could get our hands on that Giant Tenseigan on the moon..."
Uchiha Makoto thought to himself, but shook his head, dismissing the thought.
More than the Giant Tenseigan, he needs to calm down and process the changes in his Chakra attributes at his current level.
It's also good that these past few years have been used to consolidate their foundation, preparing for the foreseeable significant increase in strength after the arrival of the time-space artifact "Plow".
After all, by then, the Giant Tenseigan will definitely be his!
"I now have two paths before me!"
Having cleared his mind, Uchiha Makoto looked at himself now.
"One is the integration and application of bloodlines from various races, which promotes the further enhancement of bloodlines; the other is the Chakra transformation caused by Yin–Yang Release!"
"I only have a basic understanding of the former, and haven't yet mastered it; the latter integrates Yin–Yang Release and explores the essence of Chakra!"
"Actually, they are all about studying the deeper levels of Yin–Yang Release!"
Uchiha Makoto said silently.
Yin–Yang Release is the essence and ultimate form of the Chakra system.
For this reason, all the major ninja villages are more or less researching how to create new Kekkei Genkai through the Chakra natures!
There are many bloodstains in the original work, from various techniques like Scorch Release, Boil Release, Magnet Release, Swift Release, Steel Release, and Transparent Release...
There's also the unique Kekkei Tōta in the Shinobi World, a fusion of three natures— Dust Release.
"All Six Paths level beings possess a Kekkei Genkai and Kekkei Mōra Kekkei Tōta."
"It is the fusion of seven Chakra natures, representing the ultimate and absolute Power of All Creation."
"Now that I have the advanced Yin–Yang Release given to me by the system, I'll definitely be able to take a few more steps forward if I study it carefully!"
Unlike the native Shinobi World, Uchiha Makoto is well-versed in the plot, possessing both foresight and a system.
To this day, he possesses all the bloodstains of the Ōtsutsuki clans, the Second Hokage's Flying Thunder God Technique, the Gelel Stone of the Lost Empire, the Yin Seal, Sage Mode, the Eight Gates, and the Dragon Vein's spacetime power—he knows them all!
Right now, the only thing he's not very familiar with is Yin–Yang Release!
[By understanding the power of Yin and Yang and the Five Elements, one can obtain the ultimate power to return all things to nothingness— the Book of Formations]
Thinking about the contents of the Book of Formations, Uchiha Makoto understood that this was something the Shinobi World couldn't avoid, just like the conceptual technique "Monkey Regret Shadow"!
From the five attributes to various Ninjutsu bloodlines, then to Kekkei Tōta, and finally to Yin–Yang Release.
With his advanced knowledge of Yin–Yang Release, starting from the basics, he will definitely gain something, if not a comprehensive understanding!
"Moreover, I also possess a suitable Dōjutsu!"
Uchiha Makoto floated in mid-air, looking up at the full moon in the sky.
"Whether it's bloodline or skill, I have a unique advantage in both!"
"That's the power of cheating!"
Among the "cheat codes" in the original work, besides Naruto and Sasuke, only Nagato, who obtained the Rinnegan, and Otsutsuki Toneri, who awakened the Tenseigan, could catch his eye.
Although Nagato's Rinnegan also belonged to Madara Uchiha, it was an external manifestation of the Kekkei Mōra.
However, when Madara Uchiha awakened the Rinnegan, ultimately his Rinnegan was a replica of a portion of the Sage of Six Paths' power.
That is, the power of the Ōtsutsuki that has already been differentiated.
It did not draw out the power of the other bloodline left behind by Otsutsuki Kaguya.
Otsutsuki Toneri inherited the Sage Body and Sage Eyes power from a different system, was still inferior to Madara Uchiha!
At least Madara Uchiha's power was his own, while Otsutsuki Toneri was defeated by Naruto Uzumaki with a somewhat dramatic punch!
"My bloodline has now merged, giving me the fundamental ability to surpass theirs!"
"Sometimes I wonder, just how strong does one have to be to be considered truly strong?"
"Sometimes I think I've gone too far, but when I think about my cheat codes carefully, everything makes sense!"
Uchiha Makoto stood with his hands behind his back, tilting his head back as he gazed at the moon, looking like a hermit sage.
In just two years, he went from a young Uchiha prodigy to the strongest Shinobi World in a thousand years, and the system deserves much credit for that!
But thinking about it, it makes sense. If he continues to struggle miserably even after the system arrives, then the system would have come for nothing!
"But the blood in my body, even if it's only just begun to blend, will probably still be an eyesore to many old geezers!"
Uchiha Makoto touched the corner of his forehead, feeling both curious and alarmed.
"If it were a Kage Level, or even a Super Kage Level, Bloodstained Ninja whose bloodline has just begun to fuse, those old guys might not care too much out of maternal affection or the confidence that comes with their strength."
"But those at the Six Paths level are not descendants, disciples, or grand-disciples; they are experts of the same level!"
"Or perhaps they are a new force in the Shinobi World, a proud newcomer."
Contemplating the possible attitudes of Hagoromo Ōtsutsuki and the others, Uchiha Makoto was unsure of what to do.
Compared to his descendant who was hundreds of generations removed, his biological son, Ōtsutsuki Indra, was definitely closer to him from the start.
Even though he was her only two biological sons, Hagoromo Ōtsutsuki didn't do much!
They might not even be as good as other commoners in the Shinobi World!
But Hagoromo Ōtsutsuki also created Pure Land, fairly accommodating all souls.
"His attitude is unclear, but I'm Uchiha, so I'm probably bound to have some prejudice, right?"
"The creation of the Pure Land probably stemmed from setbacks in reality, leading people to turn their attention to the afterlife!"