Su Yu returned to the Land of Waves.
That night.
He finally dispelled the violent will within the Nine-Tails Chakra.
The amount of Nine-Tails Chakra was roughly five times that of the One-Tail, enough for Su Yu to sustain the Tailed Beast Cloak form.
However, Su Yu didn't rush to study the Tailed Beast Cloak form. Instead, he continued familiarizing himself with the Nine-Tails Chakra.
Over the next few days.
Su Yu spent each day quietly drinking tea or going to the beach to admire the scenery.
Sometimes, he even dived underwater to savor the tranquility.
Uzuki Yugao and Karin Uzumaki didn't know what Su Yu was doing. They could only tell that he seemed to be training.
The nine ninja trainees made progress every day, and each of them also received individual guidance from Su Yu.
In fact, throughout this process, Su Yu's Sharingan never stopped working.
He was influencing them with genjutsu.
In the blink of an eye.
Ten days passed.
That evening, after dinner, Su Yu went to the beach as usual.
He closed his eyes and sensed the Nine-Tails Chakra inside the seal.
A wisp of Nine-Tails Chakra slowly flowed out of the seal.
The Tailed Beast Cloak began to form around him.
It went from intangible to tangible, and from having no tails to having three.
The Tailed Beast Cloak was extremely stable, completely unlike Sora's.
Su Yu had completely familiarized himself with this power and mastered it perfectly.
In this state, his strength had reached the level of an elite jonin.
He raised his hand, and the Wind Style: Rasenshuriken took shape.
This S-rank ninjutsu was finally about to evolve from a prototype into a complete technique.
Once the Wind Style: Rasenshuriken had fully formed, Su Yu hurled it away.
"Boom!"
The sea surface churned.
A whirlpool large enough to swallow a ship appeared.
Fortunately, there were no ships nearby. Otherwise, they would have been torn to pieces.
Su Yu watched the Wind Style: Rasenshuriken's power and nodded with satisfaction.
By his reckoning, he had spent nearly a month working on it.
Now that he'd seen its power, he felt that month had been well worth it.
"With this jutsu, I can go collect the Three-Tails' chakra," Su Yu thought.
Without the Wind Style: Rasenshuriken, he probably wouldn't even have a way to injure a Tailed Beast.
To obtain the Three-Tails' chakra, he first had to find it.
Su Yu had started preparing to search for the Three-Tails a few days ago. He had taken control of over a hundred large fish and sent them out to look for it.
But so far, there had been no news.
The Three-Tails was hiding somewhere near the coast, but the ocean was unimaginably vast. Finding any trace of it in the sea was like looking for a needle in a haystack.
Su Yu wasn't in a hurry.
He returned to his leisurely training routine.
He had learned a lot from Tsunade's notes and had also come to understand the principles behind Chakra Enhanced Strength.
In practice, Chakra Enhanced Strength was the force produced by concentrating chakra in a fist and releasing it in an instant.
That force could also be achieved while wearing the Tailed Beast Cloak.
Compared to Chakra Enhanced Strength, Su Yu was more interested in the notes' research on the Raikage—in other words, the Lightning Release Chakra Mode.
It was worth noting that Konoha also had a ninja who could use a Chakra Mode: Asuma, the Hokage's son.
His Wind Release Chakra Mode wasn't as powerful as Lightning Release. Instead, it seemed more like a support ability.
Su Yu associated Wind Release with sharpness and speed.
In theory, Wind Release Chakra Mode should make a person faster, and every attack should carry the effect of a wind blade. Any enemy who came close would be cut by tiny blades of wind.
That was how Wind Release Chakra Mode should be used.
Of course, that was what Su Yu had thought before training in the Wind Style: Rasenshuriken.
Only after training in it did he realize that Wind Release Chakra Mode couldn't possibly work that way.
Simply put, this kind of Wind Release Chakra Mode would injure both the enemy and its user.
Unless the user could control the tiny wind blades.
But even someone at Kage Level couldn't achieve that degree of control.
After thinking it over for a long time, Su Yu came up with several training approaches.
He drew inspiration from wind magic in fantasy worlds and the abilities of Academy City's air current users.
Wind Release Chakra Mode wasn't difficult to use, but consuming a huge amount of chakra just for a simple boost was hardly worthwhile.
Su Yu's first idea was Wind Wings.
He would use Wind Release Chakra to create a pair of invisible wings and fly.
Flying at a low altitude wouldn't be too difficult.
But if he flew too high, he would have to divide his attention to control the chakra in the wings.
To study Wind Wings, Su Yu captured quite a few birds of prey.
In the end, he chose an eagle's wings as a model and used chakra to imitate them.
During this process, the Byakugan came in handy.
He used the Byakugan to observe the structure of the eagle's wings, then used the Sharingan's ability to attach his mind to the eagle and experience what it was like to fly.
When Wind Wings were complete,
Su Yu flew a thousand meters into the night sky and looked down at the Land of Waves.
The one drawback was that Wind Wings required Chakra Mode, so flying consumed a great deal of chakra.
This technique was very useful for escaping.
But if he used Wind Wings to travel, he might have to fly for half a day and rest for the other half.
Besides Wind Wings,
Su Yu also thought of the air current users' ability: controlling airflow.
Although airflow and wind weren't the same, the wind produced by Wind Release Chakra could serve as thrust, just like airflow.
In plain terms, he could use Wind Release Chakra to generate thrust while moving, increasing his speed. He could also use it to evade attacks.
This required precise control over Wind Release Chakra. Just like with Chakra Enhanced Strength, the thrust had to be generated in an instant.
If he could control it freely, he could even block a surprise attack or form a Wind Barrier.
A month later.
In the forest.
Su Yu was sparring with Yuki Haku.
The last time they fought, Yuki Haku might have used less than half of his strength.
Now, facing Su Yu, he was completely focused.
Su Yu's Wind Power was unpredictable, allowing him to close in on Yuki Haku in an instant.
Many of Yuki Haku's attacks were blocked by the Wind Barrier, and his senbon couldn't hit Su Yu at all.
Even Demonic Mirroring Ice Crystals couldn't trap him.
Su Yu's Wind Barrier could block not only Ice Senbon, but even ice kunai.
One punch from Su Yu shattered the Demonic Mirroring Ice Crystals. That, too, was a use of Wind Power.
Yuki Haku usually didn't use ice kunai against anyone, but Su Yu was an exception. Even ice kunai were useless against him.
By now, Yuki Haku had upgraded his ice kunai to Great Ice Kunai. Only then could he break through Su Yu's Wind Barrier.
Su Yu wasn't really fighting him. He was observing Yuki Haku's Ice Release.
After every sparring session,
Su Yu would ask for an ice kunai to take back and study.
What was he studying?
Answer: how to synthesize Ice Release chakra.
Before you continue