The use of natural energy in the previous three lives can be said to have been studied to the extreme.

Popular practice methods rely on the connection between the spirit and the natural world, and then rely on a strong spirit to make the natural energy communicate with the body.

However, Bai Yu also conceived a method of cultivating immortality with a high probability of success.

The probability can be as high as about 80%.

But the higher the talent, the easier it is to learn.

Therefore, Bai Yu needs to find individuals who are more likely to succeed, and get them in place in one step, so that they can grow rapidly.

"Among your descendants, which one is more likely to successfully practice immortality?"

Bai Yu asked about Bai Tuan again, and at this time the researcher had already finished sampling, and when he saw that Bai Yu was busy, they retreated.

Not long after Bai Tuan heard Bai Yu's question, he immediately answered.

"Black Slash, it's purer."

"Sure enough, it is Black Slash. It seems that it is more suitable."

Bai Yu thought of the black cat, muttered to himself, and while speaking, he took away the shackles on Bai Tuan.

With the help of the researchers, after putting on short shorts and a lab coat, Bai Tuan returned to Seven Cat Island with it.

However, as soon as he went back to Seven Cat Island, he suddenly dropped a few quiet lights, carrying the wind that broke through the sky.

Bang~

A black and thick weapon resembling a pirate hook was directly grasped by Bai Yu.

"Your Excellency is really patient, wait for me for a long time~"

The visitor is small in stature, and looks leaning toward a seven or eight-year-old boy, but the murderous air in his eyes makes one dare not underestimate.

Almost at the first sight, Bai Yu recognized him.

Citrus Orange Yakura, the genius of the Citrus Citrus family in Seven Cat Island, is also the fourth generation of water shadow in the original book.

"You shouldn't trespass on Seven Cat Island and hurt the noble Seven Cats on my island!"

Yakura's tone was extremely cold, and a faint cold color was glowing in his purple eyes. It was because his face was immature, and it also brought great momentum.

However, Bai Yu's expression was very calm and he didn't care at all.

"It's not that I want to hurt them, but that they don't understand what I'm doing and conflict."

"You should also know this old cat. Its stubborn illness has been in the body for many years, and it may die without treatment."

"I just take it for treatment~"

Although Bai Yu was so real that he couldn't tell the truth, all the cats in Bai Tuan were shaved, and he was still in a coma.

This makes people feel that they have suffered a great insult.

Yakura thinks so too, but Bai Tuan is still in Bai Yu's hands, and it is difficult for him to have an attack right away, so he can only shout coldly.

"You'd better let it go now, otherwise don't blame my men for being merciless!"

"Oh~ Really?"

Bai Yu released the hand holding the back of Bai Tuan's neck, and only heard a "click", Bai Tuan's chubby body directly violently collided with the ground.

Wow~

The fat and fat all over his body trembled, bringing up the sound of waves surging.

Such a scene of great visual impact occurred in front of Kotachi Tachibana Yakura.

Make his face completely black.

"Asshole, how dare you be so rude to the master!"

The moment the scream sounded, the strange black stick struck, and the pitch-black hook took Bai Yu's neck straight.

However, Bai Yu's hand was covered with a lot of rocks in an instant, and he opened the black stick with a punch, and said with a faint smile.

"You should save the time. Whether it is you now or you in the future, you are not my opponent."

"Is it true or not? I advise you to check it before you talk. It's too impulsive, but it can be deadly~"

Yakura's gaze suddenly became stern and sharp, and his whole body suddenly appeared sharp, fighting spirit Yu Sheng Yu Gao.

"You kid, don't think you feel invincible after completing a few A-level missions!"

"A life-and-death battle between ninjas is possible. I am afraid that your opponents are too low-level, which will give you the illusion that others are weaker than you."

"Whether it's your insult to the elder or your overly arrogant and arrogant thing, my senior should teach you."

"Let you understand, it is better to be humble in life!"

When the voice fell, Yakura disappeared like a ghost.

Huhu~

The howl of the wind suddenly rose, and several dark silhouettes appeared immediately behind Bai Yu.

The shadows are endless, as if forming a black wall, to annihilate the white feathers in an instant.

But in the face of the astonishing black wall's oppression, Bai Yu's complexion didn't change, and his body didn't move much, just dodge in place.

Every dodge calculation was just right, and it was just as good as passing by a hook, dozens of times in a row.

"Ninjas are more than just physical skills!"

Yakura saw that the hook couldn't help but shattered, and after a stern rebuke, a curtain of water suddenly condensed at the end of the hook.

The water curtain presents a huge oval shape with a transparent center like glass.

"Water escape. The technique of water mirrors!"

The water glass suddenly turned into a mirror, and the surface of the mirror shook violently, as if something was about to jump out of the mirror.

"Oh? Is that technique? It is said that you can copy an identical opponent, which is interesting~"

At the moment when Bai Yu ridiculed, suddenly a teenager with white hair and purple eyes emerged from the water mirror.

The boy was full of terrifying murderous intent, and blood-red winks gradually rose in his eyes.

But somehow, as the blood grew more and more, the boy's body suddenly became unstable.

"How... how is it possible? My water mirror technique~"

Yakura looked at the copied Baiyu in disbelief, but he didn't expect that as soon as he used Baiyu's power, his body suddenly collapsed.

Witnessing all this, Bai Yu couldn't help but shook his head.

"It seems that I can't replicate it, or maybe your ability to replicate doesn't reach home at all, right?"

"This kid's play, let it end early~"

With a move by Bai Yu's hands, two water mirrors exactly the same as Yakura appeared out of thin air. After a violent turbulence, the water mirror suddenly sprang out two people exactly like Yakura.

This makes Yakura seem to have seen a ghost.

I just copied the other party by myself, but failed to copy the other party.

But Bai Yu raised his hand and used his own ninjutsu, not to mention two copies of himself.

It was originally the result of Banmen’s tricks, but his "Lu Ban" was shown off...

This reminded Yakura immediately of the battle report about Shiraba and Terumi Gosaki.

It is said that Terumi Gosaki was defeated by his own triumphant trick, Qiansha Strangling.

At first, I didn't feel anything. I thought that Bai Yu might have deliberately learned it secretly, specifically to deal with Terumimosaki.

But at this moment, he had to change his mind.

This may not be stealing learning, but watching it on the spot, and showing it to the opponent on the spot after learning.

What a terrifying talent this is!

However, two selves who also wielded big iron hooks attacked, and Yakura was about to vomit blood in his heart.

Because these two guys who are the same as themselves used the technique of water mirror again.

Suddenly there are two more selves. If you continue to fight like this, I don’t know if there will be more selves...

Yakura quickly withdrew from the encirclement of the replica and made a seal with one hand.

I saw Bai Yu and all the replicas, and a large fog appeared in a moment.

At this moment, Yakura separated several water molecules, which condensed into a pattern of peaks, piercing into the thick fog like a knife.

I saw the sound of weapons fighting soon in the thick fog, sparks splashing everywhere.

One after another, huge winds rose into the sky, after blowing the dense fog to the ground.

Yakura excitedly joined Moisture and surrounded Shiraito, and hooked the big hook to his vital part.