Experiment

By the time Kirito left Nawaki's house, it was already night. Thanks to a hearty meal of Medicinal Cuisine that effectively restored chakra and banished fatigue, he was back at full strength.

"Yo, little Kirito, you spent that long learning Sealing Jutsu from Mito-sama today? Have you eaten? Want to come eat at my place? There'll be plenty."

"Little Kirito, you're looking pretty lively today. Usually you always look sickly. Make sure you get enough rest."

"Little Kirito, I'll leave my idiot son's studies to you. Don't worry about my feelings. Hit him when he needs hitting, scold him when he needs scolding. As long as his grades improve, I'll teach you an incredibly powerful ninjutsu."

As Kirito walked through the Senju grounds, many members of the Senju Clan greeted him warmly, sincere smiles on their faces.

Children were extremely sensitive to malice and goodwill from others, especially orphans.

Kirito liked the Senju very much, because the people here were simple-minded and kind. After learning that he was Mito's disciple and an orphan, they all cared for him in their own ways, warming his heart.

Unlike the cold, dark chakra of the Uchiha, he could clearly sense that the chakra of the people living here was bright and warm, giving him a very reassuring feeling.

They really are a group of good people. It would be such a pity for them to gradually disappear in this village like this.

Kirito thought this to himself.

He had thought about why the Senju Clan would vanish from Konoha in the future, with only Tsunade active in the Shinobi World in the later anime.

He had once leaned toward the idea that the Senju Clan had answered the Second Hokage's call, voluntarily giving up their surname and changing their names to integrate into Konoha.

But after coming here and personally interacting with the Senju Clan, he discovered that things were not that simple.

The demise of the Senju Clan was mainly due to war.

The First Hokage and the Second Hokage were undoubtedly the glory of the Senju Clan. That glory was the pride of the Senju Clan, something they would protect even at the cost of their lives.

But after the two Hokage died, that glory became a heavy burden on the Senju Clan.

Countless members of the Senju Clan wanted to restore and protect that glory.

Just like Nawaki, countless children of the Senju Clan grew up under the glory of those two great men, chasing the dream of becoming Hokage from childhood.

For this, they shed their blood and gave their lives, carrying out the Will of Fire to protect the village.

In the two Shinobi World Wars, the Senju had been the main force among Konoha's Ninja Clans, always standing at the very front lines.

And because enemy-nation ninja feared that another Hashirama Senju or Tobirama Senju would appear from the Senju Clan, they would choose to kill members of the Senju Clan first in war.

For all these reasons, a large number of the Senju Clan's young adults and strong fighters ultimately died in war.

Aside from Mito and Tsunade, the Senju today no longer had much combat strength worth mentioning. All that remained was a group of the old, the weak, women, and children.

According to the original plot, Mito would die later, Nawaki would die young, and Tsunade, wounded in spirit, would leave the village and give up on herself. The Senju would decline completely and finally have no choice but to abandon their surname and voluntarily merge into Konoha, only then being freed from that heavy glory.

How could he stop the Senju Clan from dying out?

Kirito had long had an answer to this question, but before that, he first had to grasp enough powerful strength.

Half an hour later, he returned to the Orphanage.

The Orphanage's appearance had also changed greatly by now. Everyone wanted to pursue a better life, so after gaining a sufficient financial foundation, the Orphanage built new housing. The courtyard had also been furnished with many toys for children, such as slides, swings, and horizontal bars.

Kirito himself also had a house of his own.

After returning, he first greeted Yakushi Nonō and the others, then went back to his own house and arrived at the entrance to the basement.

Because many important and dangerous things were stored in his basement, in order to prevent enemies and playful children from wandering in by mistake, he had set up Sealing Jutsu at the entrance, concealing and sealing it.

This was the result of his studies in Sealing Jutsu under Mito during this period.

However, the level of the Sealing Jutsu he had set up at the entrance was still very low. Anyone with even a slight grasp of Sealing Jutsu could undo it, but it was already enough to prevent the children of the Orphanage from wandering in by mistake.

"Release."

Kirito rapidly formed seals with both hands, then pressed them against the floor.

The next moment, the once-empty ground sprouted a large number of black formulas formed from chakra. The floor slowly began to move aside, revealing a staircase leading underground.

As Kirito walked down, the sensor lights arranged on the ceiling of the basement lit up one after another.

The things placed in the basement could roughly be divided into three types: books, scrolls, and glass containers.

The books in the basement had all been bought by Kirito from bookstores. Their categories were mainly medicine, Electrical Science, and biology.

The Shinobi World's technology was actually quite advanced. Among them, Electrical Science and biology had developed rather well. By spending a little more money, Kirito had easily bought many related books. Thanks to these books, he now had a decent understanding of medicine, Electrical Science, and biology.

The scrolls were ninjutsu Kirito had collected. Most of them were Sealing Jutsu, followed by Lightning Style Ninjutsu and Yin Release Ninjutsu.

The main sources of these ninjutsu were Mito and Chizuru. All three of them had ninjutsu libraries at home. The Sealing Jutsu had been learned from Mito and organized by Kirito, while the Lightning Style Ninjutsu and Yin Release Ninjutsu were rewards Kirito had obtained through sparring with Chizuru.

There were not many Lightning Style Ninjutsu and Yin Release Ninjutsu. At present, there was only one of each, respectively Lightning Release: Lightning Ball and Yin Release: Mind Reading.

Kirito had not yet cultivated Lightning Release or Yin Release Chakra, so for now he could only stare helplessly at these two ninjutsu.

As for the glass containers, there were many of them, large and small. They contained many living things: insects, plants, various organs, and so on. The most numerous among them were some red hairs. Everything was soaking in green solutions.

"As expected of the Uzumaki Clan's bloodline. Even shed hair can regain vitality as long as it's supplied with nutrient solution, and it can even form flesh and tissue."

Kirito arrived before the largest glass container in the basement and looked at the Tissue Mass inside, a lump resembling a heart that was not moving, and smiled. A trace of fervor flashed through his eyes.

The Tissue Mass in the glass container before him had originally been only a single hair of Mito Uzumaki's that he had secretly collected. After nearly a month of cultivation, it had already become unrecognizable.

He could sense that the Tissue Mass was not only filled with vigorous life force, but had also given birth to chakra.

Chakra was the energy source of all techniques. Only by possessing powerful chakra could one become a powerful ninja. That was what Kirito believed.

Because of that, he envied people like Mito and Nawaki, who had been born with unbelievably vast Chakra, and longed to possess that power.

But he was not a member of the Uzumaki Clan, and could not obtain the key to that power.

So he planned to learn from Orochimaru and use biotechnology to fuse the Uzumaki Clan's bloodline into his own body.

Now, the Bloodline Fusion 1.0 experiment was about to begin.

Let me see whether you can survive after being mixed with my blood.

Kirito thought with eager anticipation, then dripped his own blood into the glass vessel.