There were several times when Kaguya took the initiative to propose performing a ritual between husband and wife, but Uchiha Yoichi, who was engrossed in Yin-Yang arts, refused. Subsequently, Kaguya would kneel beside Uchiha Yoichi, picking up the Yin-Yang Art scroll to study along, and would ask questions whenever she encountered something she didn't understand.
Her current habit of reading probably comes from that time she learned from him and has maintained it since then.
"Kaguya!"
Uchiha Yoichi called out, prompting the reading Kaguya to lift her head and look at him in confusion.
"There's something I need to return to you."
After speaking, Uchiha Yoichi raised his hand, indicating the black mark in his palm.
Upon seeing this mark, Otsutsuki Kaguya felt an immediate sense of familiarity and opened her mouth involuntarily, "This is...."
"You'll know once you take it."
Uchiha Yoichi extended his hand over. The mark contained Kaguya's Chakra and memories, which is why it was so familiar to her.
Otsutsuki Kaguya hesitated for a moment, but ultimately took the black mark from Uchiha Yoichi's palm.
After taking it away, Otsutsuki Kaguya immediately regained her own memories — spending nearly a year with Uchiha Yoichi, his promises to her, and the most intimate of rituals between them as husband and wife.
These memories suddenly washed over the altered ones Uchiha Yoichi had given Kaguya a thousand years ago, allowing her to truly recall those nearly one-year moments.
"This, what kind of memory is this?"
Otsutsuki Kaguya, somewhat unsure, reached out to touch Uchiha Yoichi's face, even retracting her nails; reverting back to the naive and ignorant Kaguya from a thousand years ago, she asked, "Am I your wife?"
"Yes, I'm sorry, Kaguya, for giving you your memories back so late...."
It wasn't until Kaguya was embraced by Uchiha Yoichi did she regain the familiar feeling from her memories, but she still slowly and excitedly asked, "Why after so long.... huh~"
The latter question was something Uchiha Yoichi couldn't answer, as the explanation for time jumping wasn't logical, but ultimately it was his responsibility, so he resolved it directly with the marital ritual.
With her lips sealed, Kaguya did not resist but instead responded as per the experiences in her memories.
This memory hit Kaguya quite hard. Though it was only a brief year, during that period, perhaps her favorite was the marital ritual.
Under the night sky, her blue-white hair draped over her snow-white shoulders, her pure and impeccable Tamoe Feather Robe placed on a chair.
Kaguya supported herself against the wall, her movements gradually overlapping with the memories from a thousand years ago.
..........
At dawn, Uchiha Yoichi tidied up the traces in the library and, after restoring everything, took Kaguya back to her house, letting her rest.
Uchiha Yoichi once informed Kaguya that during such matters, Chakra shouldn't be used, so an entire night's time was enough for Uchiha Yoichi to drive Kaguya to exhaustion.
However, the next thing that troubled Uchiha Yoichi was how to explain to others, or whether to keep it a secret for the time being?
Kaguya should be easy to placate — as long as Uchiha Yoichi was with her, Kaguya would stop overthinking.
As for Mikota, Minami, Kushina, and Tsunade... better to hide it from them!
If they knew, they would definitely end up avoiding him for a period of time.
Returning, Uchiha Yoichi took out his self-disciplinary handbook, turned to the second page, and, with a large stroke, wrote — Abstinence!
"Good, this is my resolve!"
Uchiha Yoichi's resolve was as firm as steel, and since he had made this decision, he intended to execute it unwaveringly.
However, before leaving the house, Uchiha Yoichi returned, grabbing the disciplinary handbook off the shelf, murmuring to himself, "Seems like I missed something...."
After the word 'Abstinence,' Uchiha Yoichi added 'three days,' but after reconsidering, he crossed out 'three days' and changed it to 'two days,' noting the date thereafter.
"Perfect..."
Uchiha Yoichi set the disciplinary handbook back before leaving the study.
——————————————
Going back a thousand years, the harvest has been significant.
The Yin-Yang arts indeed have their unique aspects, and what caught Uchiha Yoichi's interest the most was their Shikigami Jutsu.
Even the spirit bodies of ordinary deceased, cultivated over generations, could become powerful Gods.
And the Pure Land was the place where all Yin Yang Masters cultivated Shikigami, and before Kaguya and Isshiki, it was called High Celestial Plain by the Yin Yang Masters.
However, currently, it had been occupied by Otsutsuki Hagoromo, which explained why, after a thousand years, Otsutsuki Hamura had long died, but Otsutsuki Hagoromo still maintained tremendous strength and could even lend power to Uzumaki Naruto and Uchiha Sasuke to seal Kaguya.
Having transformed himself into a Shikigami spirit body and cultivated for a millennia, possessing such power was very normal.
Knowing this, Uchiha Yoichi now knew how to deal with Otsutsuki Hagoromo next.
"Luckily after I left, those disgruntled Yin Yang Masters gathered to attack Kaguya and were nearly wiped out in retaliation, otherwise, if Otsutsuki Hagoromo found the true legacy of Yin Yang Arts, it would have been tough to manage..."
Uchiha Yoichi thought, also thankful that Otsutsuki Hagoromo learned a simplistic version from Gamamaru, making his plans feasible.
Yet before that, he needed a Shikigami, one that couldn't be too weak, preferably Kage-level Ninja strength.
Chakra is a combination of physical energy and spiritual energy, and those with strong Chakra naturally have strong spirit bodies.
"But finding a suitable person is difficult...."
Uchiha Yoichi pondered, realizing that with the Pure Land now under Otsutsuki Hagoromo's control, unless he immediately killed some Kage-level powerhouses to control their spirits.
"No rush, first prepare the materials...."
Uchiha Yoichi wasn't in a hurry. Creating a Shikigami required extensive preparation, and Hidden Cloud and Hidden Mist Villages had several Kage-level Ninjas, so he would harvest spirit bodies there when the time came.
After Uchiha Yoichi returned, the village developed steadily.
Now for Konoha, consolidating territory was paramount, and it was mostly completed, with Pakura's steadfast nature leading to a thorough reformation in the Land of Wind against the remaining nobles.
With economic prosperity and military strength, and civilians loyally following Konoha, this was the current state of Konoha Ninja Village.
However, as Konoha's power was already the first in the Ninja World, calling it a Ninja Village might no longer be fitting, and many people thought Konoha Ninja Village should adopt a new name.
At the very least, it should be called a country, especially since Konoha's Guard Team had taken control of all the Land of Fire's territories.
Many people were discussing it, and even Uchiha Yoichi found Sasuke and Naruto arguing over it when he returned home, though none of their suggestions were any good.
One day.
Yuhi Kurenai suddenly walked into the office to inform Uchiha Yoichi: "Teacher Yoichi, Konan wishes to see you about something."
"Konan?"
Uchiha Yoichi was slightly taken aback. Allowing her to return with Nagato to the Rain River District prison, could they have run into some trouble?
"Let her in."
Hearing this, Yuhi Kurenai brought Konan in.
Once in, Konan appeared very calm. She and Yuhi Kurenai both had intimate exchanges with Uchiha Yoichi, but neither knew about the other.
Uchiha Yoichi directly asked, "What's the matter, Konan?"
"I encountered something, and I thought it would be better to report to Lord Hokage. This time while returning to the Rain River District, I was intercepted along the way. If I remember correctly, Jiraiya is now a wanted A-jsdfhhdjaj-unit in Konoha."
After she spoke, Konan presented a toad corpse with a paper shuriken on it.
"Jiraiya had this toad intercept me to inquire about Konoha's situation, but I didn't divulge any information and killed the toad."
Upon hearing this, Uchiha Yoichi nodded to Konan, saying, "Well done, this counts as a merit for you...."
If Konan hadn't reminded him, he might have forgotten about Jiraiya entirely.
Since it wasn't very important before, and with Mount Myoboku already destroyed, Uchiha Yoichi had ignored it; now with Jiraiya basically walking into his hands, he just needed Kage-level strong spirit bodies to make Shikigami.