During the entire summer vacation, Izayoi trained together with Hinata.
Every day, he would first go and confirm Yamanaka Ino's location, then use the Transformation Jutsu to invite Hinata out. The two of them would go to an abandoned training ground, where they either practiced tree climbing or engaged in taijutsu duels.
Hinata, who gained friendship and also found self-confidence, changed incredibly during this summer.
It wasn't just her strength, but also her aura.
The first person to notice the change in the eldest daughter was Hyuga Hiashi.
When he learned that Hinata was practicing water walking, he realized that she wasn't simply going out to make friends and play.
Izayoi also noticed that someone was secretly watching him and Hinata.
But Izayoi didn't hide it—he planned to test Hyuga Hiashi's attitude.
That day, Izayoi found an excuse to let Hinata watch how he performed water walking.
In addition, Izayoi also demonstrated the Shadow Clone Jutsu and basic Wind Release, and in taijutsu duels, he completely overwhelmed Hinata.
Then, the next day, Izayoi once again transformed into Yamanaka Ino and went to the Hyuga clan to invite Hinata out.
The moment he saw Hinata coming out, he understood Hyuga Hiashi's attitude.
This noble clan leader had silently allowed Hinata to train with him.
Izayoi's identity held no secrets to these ninja clans.
A civilian orphan from a ninja family who hadn't even completed the first three semesters of his first year at the Academy, yet already mastered tree climbing and water walking—which weren't even taught at school—and could use Shadow Clone Jutsu and basic Wind Release.
Such talent, along with his chakra amount, was undoubtedly a civilian genius of this era.
Training with such a genius would give Hinata even more motivation.
This could clearly be seen from how she practiced water walking at home and the changes in her personality and aura.
Although Hyuga Hiashi was a bit disappointed with the performance of his eldest daughter, since he hadn't yet discovered Hanabi's talent, he had not given up on Hinata or the idea of raising his second daughter.
Seeing that Hinata had changed so much just by making a friend, Hyuga Hiashi could only feel happy.
As for the idea of separating them like star-crossed lovers, Hyuga Hiashi didn't have it.
First, the two of them were too young—this was likely just pure friendship.
Second, in his eyes, Izayoi and Hinata were impossible.
The Byakugan of the Hyuga clan could not be passed down to outsiders.
Izayoi was merely a "tool" to help change Hinata.
He would constantly monitor the relationship between Izayoi and Hinata. Once either side changed, Hyuga Hiashi would step in and tell them the cruel reality.
Unless Izayoi became extremely outstanding, like the Fourth Hokage Namikaze Minato, the two of them wouldn't have a future.
Izayoi and Hinata didn't know any of this.
Seeing that Hyuga Hiashi wasn't stopping him from spending time with Hinata, Izayoi completely relaxed. While teaching Hinata the Three Basic Jutsu and chakra control techniques, he also used taijutsu duels to try to trigger Hinata's red talent thread.
This summer, both Izayoi and Hinata gained a lot.
Hinata had already mastered the techniques of tree climbing and water walking, and also learned the Three Basic Jutsu.
However, possibly due to insufficient chakra, she hadn't yet learned the Shadow Clone Jutsu.
Besides that, her Gentle Fist had improved significantly.
Among Izayoi's talent threads was one called "Medical Genius."
His mother in this life had been a medical ninja, and she had left behind a scroll of basic medical ninjutsu, which Izayoi had already mastered.
In order to trigger the White-Eyed Princess's red thread, Izayoi only held back during the first few days to let Hinata get used to it. After that, he went all out and beat Hinata mercilessly.
After the beating, he would heal Hinata.
In a similar taijutsu match, even though Neji was full of hatred toward Hinata, he didn't dare hurt her with Hyuga Hiashi watching.
But Izayoi really did hit her, without any pity.
Didn't matter who she was—beat her first, comfort her later.
By constantly getting beaten up, Hinata's actual combat experience improved rapidly, and her moves became more decisive. She injected chakra into Izayoi's body without hesitation.
Used to getting treated afterward, Hinata definitely wouldn't end up like in the original story, where she was too kind to hurt her little sister and lost to a Hanabi who was five years younger.
It was precisely because of such an obvious change that Hyuga Hiashi fully allowed Izayoi and Hinata's "private training."
And although he hadn't triggered the White-Eyed Princess's red thread this summer, Izayoi also improved a lot.
Through the taijutsu duels with Hinata, Izayoi had secretly learned the Hyuga clan's Gentle Fist techniques.
After testing Hyuga Hiashi, Izayoi used the excuse of guidance to have Hinata secretly bring out a human acupoint diagram and a Gentle Fist scroll.
The body's acupoints and the technique of injecting chakra into the enemy's body—Izayoi had already mastered these.
Izayoi wasn't that interested in Eight Trigrams Palm, but he was very interested in this technique of blocking the enemy's chakra flow through acupoints.
In battle, it might have unexpected effects.
Even though he didn't trigger a red thread, Izayoi still got two talent threads from Hinata this summer.
One was a blue thread: "Chakra Control." Izayoi already had this one too.
At that time, a prompt sounded in his mind:
Ding! You have obtained the talent thread [Chakra Control (Blue)], which overlaps with your existing talent thread. Would you like to fuse or decompose it?
Izayoi chose to fuse.
After fusing, the Chakra Control didn't turn purple—it was still blue.
But in terms of chakra control, Izayoi felt a clear improvement.
At that moment, Izayoi finally understood why Haruno Sakura was able to surpass Hinata, who had practiced Gentle Fist since childhood, and Shizune, who had trained under Tsunade since childhood, in just three years.
It's like how both came from Otsutsuki bloodlines, but the Hyuga clan couldn't compare to the branch on the moon.
Even though both were "Chakra Control," the gap between blue and purple was enormous.
Even if two blue Chakra Control threads fused, they still wouldn't reach the purple level.
But the purple Chakra Control thread allowed Sakura to learn advanced medical ninjutsu, the chakra burst techniques of the Senju clan, and S-rank techniques like Yin Seal and the Strength of a Hundred in just three years.
Aside from Chakra Control, Izayoi also triggered a purple thread—Kekkei Genkai: Byakugan.
Unfortunately, a kekkei genkai is just that, and the "White-Eyed Princess" is still the "White-Eyed Princess."
If Izayoi didn't already have Byakugan, then this thread would only give him the Byakugan—not the purity of Hinata's Byakugan.
Izayoi chose to decompose this thread.
Fusing it would increase the purity of his Byakugan.
But awakening the Tenseigan would still be impossible.
It's like how fusing two blue Chakra Control threads wouldn't make a purple one.
The Otsutsuki clan sacrificed their entire branch family's Byakugan to create the final form of the massive Tenseigan.
It might've even included Byakugan from the main family.
With the Otsutsuki clan's high bloodline purity, their Byakugan purity definitely surpassed the Hyuga clan's.
If Izayoi wanted to evolve his Byakugan into a Tenseigan through fusion, who knows how many threads he'd have to fuse.
It would just be a waste.
Izayoi didn't lack that little bit of purity.
After decomposing the Kekkei Genkai: Byakugan (Purple) thread, Izayoi gained over a thousand points, and his interface changed too.
[Host: Izayoi]
[Talent Threads: Otsutsuki Bloodline (Red), Kage-level Aptitude (Gold), Kekkei Genkai: Byakugan (Purple), All Attribute Physique (Purple), Medical Genius (Blue) [+], Chakra Control (Blue) [+]]
[Points: 1791]
The plus signs behind "Medical Genius" and "Chakra Control" meant they could be upgraded.
That's the use of points.