In Hyuga Kagami's original plan, the sources of chakra required for his ritual were the Giant Tenseigan under his control, the Ryumyaku, Shion after fusing with the demon Moryo, the Gelel Ore Vein, the Heavenly Spear, and the complete Nine-Tails, One-Tail, Three-Tails, and Seven-Tails—the four Tailed Beasts in which yin and yang had been united.
Without exception, all of these chakra sources were at Tailed Beast level.
Among them, Shion and the Nine-Tails clearly surpassed ordinary Tailed Beast-level sources in terms of chakra quantity. If the yang-natured Gelel Ore Vein and yin-natured Heavenly Spear could be combined into one, their chakra reserves would likewise far exceed those of ordinary Tailed Beasts.
Taken together, these chakra sources, combined with the Tenseigan that had already advanced to the "Six Paths level" through the previous ritual and the temporary burst of the Eight Inner Gates, should have been enough, by Hyuga Kagami's estimate, to support his attempt to attain the Kekkei Mōra that symbolized immortality and indestructibility.
But now, an accident had occurred. The Akatsuki had taken the Three-Tails and Seven-Tails.
The loss of two Tailed Beasts left a significant gap in Hyuga Kagami's plans. Fortunately, he was accustomed to leaving himself room no matter what he did, especially in something as crucial as gathering chakra sources. This gap was not impossible to make up for.
"Senjutsu..."
At that thought, Hyuga Kagami murmured to himself.
If there was anything more immense than the Ten-Tails' energy, it could only be the natural energy scattered through the earth's veins, the air, even sunlight and stars. After all, the Divine Tree that transformed into the Ten-Tails had been nurtured by natural energy.
The Chakra Fruit that had allowed Ōtsutsuki Kaguya to break through her shackles in one stroke and achieve the Kekkei Mōra had likewise drawn