Once the great war began, the development of events was no longer a matter of choice.
The Daimyo of the Country of Hi had originally thought he could easily suppress Minamikawa Yuu's sudden declaration of war.
But he soon realized that it was not the case at all.
After years of development, the Country of Hi had been heavily infiltrated.
Just as there were many people from the Country of Hi in the Land of Ancestors, there were also many operatives from the Land of Ancestors within the Country of Hi.
In fact, their numbers were even greater.
After the war broke out, a large number of samurai within the Country of Hi defected immediately, and the borders fell rapidly.
In just a few short months, the army had marched directly to the capital of the Country of Hi.
At this point, the Daimyo of the Country of Hi finally panicked.
He sent an envoy to deliver his daughter, attempting to fulfill their former marriage contract and persuade Minamikawa Yuu to withdraw his troops.
Unfortunately, this changed nothing.
What a joke.
Having fought to this point, there was no such thing as retreating.
If he didn't take down the Country of Hi in one fell swoop, was he supposed to leave this menace alive?
He directly ordered the envoy to be detained and then continued the siege.
The following month, the capital of the Country of Hi fell. Insiders within the city opened the gates and presented the Daimyo, who had been attempting to flee.
With that, the Country of Hi was declared destroyed.
The fall of the Country of Hi was of great significance to the Land of Ancestors, but it was merely the beginning.
Over the next few years, Minamikawa Yuu campaigned across the land, essentially wiping out all the large and small nations in every direction and unifying the entire continent.
Thus, the Land of Ancestors became the sole power... Beneath the magnificent God Tree, Kaguya and Minamikawa Yuu arrived hand in hand.
Gazing at the God Tree before her, Kaguya's heart felt little emotion; she simply watched the canopy quietly.
Within the vision of her Byakugan, a flower was slowly blooming there, and another fruit seemed to be gestating within it.
That was a new chakra fruit, currently in the process of formation.
However, compared to the gestation speed of the previous chakra fruit, the growth of this one was very slow.
Looking at its state, it was uncertain how long it would take to complete its growth.
At the very least, it was impossible for this fruit to finish gestating before the Otsutsuki Main Family arrived in this world to collect the chakra fruit.
There was no other way.
The God Tree had come to this world and grew by absorbing the Natural Energy of this world.
In the beginning, the Natural Energy of this world was quite abundant, and the God Tree grew beyond imagination, bearing a chakra fruit at the fastest possible speed.
But after the first fruit was produced, much of the originally abundant Natural Energy was consumed, and the time for the God Tree to bear fruit naturally became extremely slow.
In fact, if not for the Ninja World's abundant energy, under normal circumstances, a single fruit would have been enough to exhaust the entire foundation of the Ninja World, leaving no possibility of producing a second chakra fruit.
Thinking of this, a hint of melancholy appeared in Ōtsutsuki Kaguya's eyes.
"Besides Natural Energy, are there other ways for the God Tree to bear fruit?"
Standing before her, Minamikawa Yuu asked.
"Yes."
Ōtsutsuki Kaguya nodded and then began to explain.
After swallowing the chakra fruit, she no longer kept anything from Minamikawa Yuu, directly recounting everything to him.
At this moment, she had no reservations and spoke all that she knew.
The God Tree was a tool used by the Ōtsutsuki Clan to increase their power.
It could absorb various energies to bear pure chakra fruits for the Ōtsutsuki Clan's use.
Simply put, it was an efficient energy collection tool that could transform energy that ordinary people couldn't use directly into chakra fruits that could directly increase one's power.
However, there were also some restrictions in the process of its use.
For example, a member of the Ōtsutsuki Clan must be used as a sacrifice for the God Tree to grow successfully.
"Wait..."
Minamikawa Yuu was surprised: "According to what you said, the God Tree must have a sacrifice to grow."
"Then who was sacrificed for this God Tree in front of us?"
"It was myself."
Ōtsutsuki Kaguya explained: "I fed my original body to the God Tree and then reincarnated into another body that had been prepared long ago."
Sacrificing one's original body to the God Tree and then reincarnating into another vessel was also a viable method.
After all, to the Ōtsutsuki Clan, it was just a mere body; even if it was fed to the God Tree, it didn't matter, as they could still continue to live.
However, precisely because her original body had been fed to the God Tree and her current vessel was just a newly developed body, Ōtsutsuki Kaguya's power was so weak.
Because it was almost like starting over from scratch.
"I see."
Minamikawa Yuu nodded, and a certain doubt in his heart was finally resolved.
At this moment, he could roughly confirm it.
The Ninja World before him was likely not the orthodox history, but rather a parallel timeline.
He knew the orthodox story of the Ninja World.
In that story, there should have been two people who came to plant the God Tree.
Ōtsutsuki Kaguya was the one to be sacrificed to the God Tree, and another Ōtsutsuki was the harvester.
But at the critical moment, Ōtsutsuki Kaguya launched a sneak attack on the other person, feeding that person's body to the God Tree Ten-Tails and taking the fruit of the god tree for herself, which led to the subsequent series of events.
Furthermore, in the orthodox story, Ōtsutsuki Kaguya had no husband, and the Six Paths Sage brothers she later gave birth to were supposedly born from the blessings of all living things.
But this world was clearly different.
Minamikawa Yuu looked down at Kaguya's gradually bulging abdomen, and this thought flashed through his mind.
Back to the topic at hand.
As an energy collector, besides being able to directly absorb high-grade energy like Natural Energy, the God Tree could also draw in Life Energy and Chakra.
The chakra fruit was inherently something that contained high-purity Chakra; it was only natural that Chakra could be absorbed by the God Tree and converted into a chakra fruit.
As for Life Energy, it was one of the energies used to synthesize Chakra, so it was also normal for it to be utilized by the God Tree.
"Life Energy and Chakra?"
Minamikawa Yuu pondered to himself.
"Yuu."
Standing before him, Kaguya spoke again, sharing her thoughts.
She wanted to kill everyone in the entire Ninja World except for those close to Minamikawa Yuu and turn them into sacrifices.
To her, ordinary indigenous mortals were mere ants.
Before this, because of Minamikawa Yuu, she had no real thoughts about these Ninja World natives, feeling neither affection nor malice.
But because of that incident with the Country of Hi earlier, she had developed a deep sense of disgust toward mortals.
At this moment, the idea of exterminating all life in the Ninja World was not at all surprising.
"Why?"
Regarding Kaguya's idea, Minamikawa Yuu remained very calm, simply asking: "Are there any benefits to doing this?"
"The Life Energy of the sacrifices can accelerate the growth rate of the fruit of the god tree."
Kaguya spoke: "As long as there are enough sacrifices, it might be possible for the God Tree to gestate another chakra fruit."