Just after returning, before Satsuki could decide how to arrange Ranzuki, she received a message from Shirakumaru.
She recalled that she had previously assigned him, via the Giant Tenseigan, to infiltrate the Uchiha clan. His mission: to reveal the identities of Indra and Asura to intensify the feud between the two clans, ensuring her plans could proceed.
This time, however, Shirakumaru brought unexpected news.
"Might Hui?"
The name sounded faintly familiar. After pressing Shirakumaru for details on the man's appearance and attire, Satsuki concluded he could well be the grandfather of the future Might Guy—the man who nearly ended everything with a single kick.
According to Shirakumaru, this man had already begun to unconsciously develop the prototype of the Eight Gates Released Formation in battle—an astonishing talent.
The Eight Gates technique required profound knowledge of the body's chakra pathways. While it appeared simple in anime—just opening a sequence of "gates" to channel chakra—the reality was far more complex. The human body contained hundreds of interconnected meridians, each with different functions and different chakra tolerances.
Meridian strength wasn't something one could enhance through training alone. The practitioner needed to select the optimal chakra route before any strengthening could even begin. Without deep knowledge of human chakra networks—or a dojutsu like Satsuki's Byakugan—trying to brute-force open the Eight Gates was essentially suicide.
Considering the charm and character of Might Guy and Rock Lee in the anime, Satsuki decided to pass on her nearly complete Eight Gates technique to them. Strictly speaking, she had acquired it from the anime world, and it no longer offered much improvement to her own abilities.
Her body, refined through the fusion of the Tenseigan and further enhanced by immense natural energy absorption in the Tenryū Heart Cave, far outstripped the benefits of the Eight Gates—and without its severe side effects. After all, the Eight Gates was ultimately a consumable technique.
She ordered Shirakumaru to ensure Might Hui's safety. For now, she placed Ranzuki on standby while preparing to handle the Ryūmyaku chakra energy and consider her position toward the sage faction.
Her staged battle with the Dragon-Headed Sage had granted her the ability to cultivate natural energy but had also offended the sage forces. Though she had the power to disregard them, they remained a potential threat.
Her Tenseigan chakra was far too distinctive. If she appeared openly, she risked deliberate targeting. If she ever allowed Ranzuki to operate freely in the outside world, she would likely need to limit her use of Tenseigan Chakra Mode.
That said, she had no immediate incentive to destroy the sage faction. Their full strength and hidden depth were unknown, but in the future, when facing the Ōtsutsuki main family or the elusive Isshiki Ōtsutsuki, they could serve as useful pieces on the board.
As a descendant of Kaguya Ōtsutsuki, Satsuki was destined to inherit many tangled grudges—thanks in no small part to her ancestor's clumsy handling of affairs.
She summoned three squads of puppet samurai and some puppet shinobi to maintain order here, then used the Summoning Technique to call forth the stone statue of Hamura Ōtsutsuki, instructing Kiyomaru to use it to remodel the area.
Kiyomaru, her steward, had been imbued with a true personality by her Tenseigan chakra and was considered part of her household. But as he was not a true human puppet, she had never granted him a new name—he remained Kiyomaru.
After arranging these matters, Satsuki summoned the Giant Tenseigan.
On closer inspection, Satsuki noticed the Giant Tenseigan's glow was slightly dimmer than when she first saw it, and the six-petaled flower pattern at its core was blurred. Clearly, her spur-of-the-moment "Earth Wheel Reincarnation Destruction" had taxed it heavily.
Fortunately, the Ryūmyaku chakra was available.
She placed the Giant Tenseigan within the Ryūmyaku's energy, channeling the flow into it.
The scene caught Candle Nine Yin's attention.
"This energy has already been converted by the Ten-Tails into chakra. It's fundamentally different from natural energy and your Tenseigan chakra," it said, its spectral form emerging from the dragon embroidery on Satsuki's robe. Circling the Giant Tenseigan, it added, "This thing was made by your clan, wasn't it? Some functions resemble the God Tree. Unfortunately, it's incomplete."
"You know about the Ten-Tails?" Satsuki's interest piqued. She was curious about the Ten-Tails as a planetary weapon—especially its energy conversion and chakra authority hierarchy, which effectively rewrote a planet's fundamental physical laws.
In the original story, the Uchiha's ocular power could command tailed beasts directly. Even the Senju, Uzumaki, and other descendants of the Ōtsutsuki could exert a vague suppressive influence. The reason was that the tailed beasts were vast chakra entities born when the Ten-Tails converted the planet's natural energy into chakra—and in doing so, it established a hierarchy of control.
Ōtsutsuki chakra, and that of their descendants, naturally suppressed ordinary chakra. This was why they could so easily subdue tailed beasts.
It was this theory Satsuki had tested when she lent that scroll to Gokuma Senju—and from the results, her Ōtsutsuki chakra indeed had overwhelming control over the Eight-Tails.
"I'm just an outsider," Candle Nine Yin replied. "I discussed the Ten-Tails with Hagoromo, but only superficially. However, I can tell this Giant Tenseigan is incomplete—it can't generate its own energy, only use what it has stored."
It cast her a wary look. "If you used that Earth Wheel Reincarnation Destruction once a month, it would exhaust its reserves in less than three years."
"Ryūmyaku chakra charging is only a stopgap. You have a real solution?" Satsuki caught the implication.
"To let it absorb and convert energy into Tenseigan chakra by itself, you'd need to enhance it—and that requires Hagoromo's relics."
The Six Paths Treasured Tools.
After a moment's thought, Satsuki shaped Tenseigan chakra into three tools: the Amber Purifying Bottle, the Sword of Totsuka, and the Yata Mirror Shield.
"How nostalgic," Candle Nine Yin murmured. "These were made by the Sage of Six Paths after he became the planet's highest authority following the Ten-Tails' distortion of the world's laws. Each tool was imbued with unique Six Paths power. If you could merge them with the Giant Tenseigan, it could not only regenerate energy but perhaps gain other abilities."
"I didn't sense great power from them in battle," Satsuki said, dispersing the images.
"That's because what you've seen are imitations. The genuine Six Paths Treasured Tools vanished after Hagoromo's death."
It withdrew back into her robe.
"No one knows their whereabouts? Is that really true?"
Satsuki didn't take its words at face value.
She remembered the Amber Purifying Bottle imitation had come from the sage clan. If fakes existed, there must be clues to the originals. Once her plan to create the Hyūga clan reached a certain stage, perhaps it would be time to visit the legendary sage clan.