When she looked at the small box in Yuxing's hand, Renna's young girlish temperament just now immediately disappeared from her, and was replaced by a very calm scholarly aura.

As early as a few months ago, when Yuxing had just returned from the fishing village on the south bank, he had placed half of the "beast pill" he had left behind on Renna's side, and gave her 50 million taels to use as funds to build a modern laboratory.

Just about a week ago, Goyuki received a letter from Rena stating that she had made new progress in her research and wanted to ask Yuyuki when he would be free to come and have a look.

However, since it was the time when Yuxing was preparing to take the middle ninja exam, he didn't have time to go to Kusa Ninja Village, but he remembered that Rena had said that he wanted to visit Konoha Village, so Yuxing invited her to come here as a guest, and brought the research results with him or something......

It's just that what Yuxing didn't expect was that the time period when Renna came was so coincidental, allowing him to experience the feeling of "Shura Field".

"Rendan...... This thing looks pretty good, but what does it do? ”

After opening the small box that Lian Nai brought, what was placed inside were small pills that were as white as jade and looked like they were radiating a bright light, which was simply different from the black "beast pill" before.

"Well, it's not clear what the specific effect will be for the time being, so I brought it for you to eat and see."

At this time, Rena said with an expression of "I don't know if this dish is good or not, so I want you to try it", but Goyuki immediately wrinkled his face when he heard it.

"Okay, will you use me as a test subject?"

"It's pretty much the same, but this Ren Dan should be good for your body."

"How so?"

"Didn't you leave blood and some dander in the lab before, and after extracting the main ingredients in the "beast pill", I found that those ingredients have a perfect match with your genes, as if they were made for you. ”

Is it? Hearing this, Yu Xing casually picked up a pill of "Ren Dan", but in his mind, he couldn't help but think of the "familiarity" that appeared when he took that half of the beast pill a few months ago.

It was as if every cell in the body had become full, activated by an ingredient in the drug, and the surging power poured out of the body, making it feel very comfortable.

Goo-dong. After thinking about it, Yu Xing directly swallowed this "Ren Dan" in one gulp, and then asked: "Then after talking for a long time, what are the main ingredients you extracted from the "Beast Pill"?" ”

"Anyway, it's definitely not any kind of herb I know...... I even suspect that it is not a "medicine" at all, but a crystalline product produced by the materialization of a high-density chakra. ”

"High-density ...... Chakra materialization? ”

The moment he heard this word, Yu Xing's eyes couldn't help but widen, and then he swallowed a mouthful of saliva inexplicably.

As far as he knew, there was indeed a high-density chakra materialization in this world, and that kind of creature formed by the condensation of giant chakras was called ...... Tailed beasts.

Obediently, I shouldn't be eating the meat of a tailed beast, right?

When he thought of this somewhat outrageous answer, Yuxing couldn't help but shudder, because it was also a little too sensational.

But when he told Rena about this speculation, the latter let out a crisp laugh like a silver bell.

She smiled and said: "No, no, no, how is it possible, the meat of the tailed beast contains highly poisonous, and this highly poisonous poison cannot be eliminated by purification at all, rather than using it to refine medicine, it is better to use it to make poison." ”

Although Rena herself has not studied the Tailed Beast herself, her grandmother has a friend who is a senior researcher in Yunyin Village, and Lianna has heard her grandmother mention this matter a little.

Tailed beasts are the most powerful weapons of war in the world, and various villages have naturally done a lot of research on them, such as extracting their body tissues to make medicines or even take them directly.

But so far, almost everyone who has taken medicine containing the body tissue of the tailed beast has died on the spot, except for two extremely rare special cases that are said to have occurred in Yunyin Village.

Unable to purify and inedible, although the body tissue of the tailed beast is a powerful chakra crystal, it is impossible to use it for human use, which is a fact that has long been determined by the scientific research departments of various countries.

"Is that so...... That's right, if refining the meat of the tailed beast can obtain powerful chakra crystals, it is estimated that the tailed beast has already become a captive animal, and what kind of human pillar force is there to engage in. ”

At this time, Yuxing nodded silently, but at this moment, he felt that there was a special chakra slowly spreading inside his body.

"It's a little hot, it seems like something is seeping into my meridians."

"Relax, compared to the "Beast Pill" with a lot of strange materials, my "Ren Dan" only has some things added to help absorb it, so the effect on you should be much more significant than that of the Beast Pill. ”

While feeling the changes in his body, Yu Xing hurriedly opened his "white eyes", and at this time, in his eyes, the chakra that was so pure that there were no impurities was slowly spreading from his abdomen to his whole body.

Yes, pure, it's the first time in Yuyuki's life that I've seen a chakra stream so pure, not even a little superfluous.

If you compare chakra to water, most of the water looks clean, but in fact there are many things in it that are invisible to the naked eye, and the same is true of chakra.

Fire, wind, thunder, earth, water, yin, yang, the vast majority of chakras contain some of these seven attributes, even if a ninja who can't use attribute changes at all, the chakra in his body will still not be pure and colorless.

The chakra that can be released from the "Rendan" is pure to the extreme, as if it is water without a trace of impurities, giving people the feeling of nectar from a distant fairyland, without any touch of fireworks in the world......

What Lian Nai said was right, although it was also full of power, but since "Ren Dan" and "Beast Pill" were different, the latter was mixed with a lot of impurities, but it diluted the original medicinal effect.

As this pure chakra gradually spread to Yuxing's whole body, he only felt that his entire body was more comfortable than ever, as if all the injuries on his body had disappeared without a trace, and this feeling of comfort made him close his eyes.

"Ahh Brother! You...... Your hair! ”

But at this moment, Hinata, who had been sitting bored with his brother and Rena "flirting", suddenly shouted loudly, as if he had seen something strange.

Well? How...... At this time, Goyuki slowly opened his eyes, but the first thing he saw was Renna's surprised expression.

"Why, it's like I've seen a ghost, what's wrong with me?"

From the gazes of Hinata and Renna, it was not difficult for Miyuki to see that it seemed that some changes had occurred in his body, but he reached out and touched his head, but found that there was nothing special about it.

"You..... Look at your hair for yourself. After discovering Goyuki's doubts, Rena hurriedly took out a small makeup mirror from her bag and placed it in front of him.

My hair? Did my hair turn blonde and stand on end? How can this be...... Hey?

The next moment when Goyuki's gaze swept to the mirror, he couldn't help but let out a "huh", revealing an expression that was even more surprised than Hinata.

Of course, Yuxing naturally doesn't have Super Saiyan blood, so it's impossible for his hair to turn blonde and then stand up as a trident messenger, but at this moment, the original pitch-black short and medium hair has turned into a gray and white color!

It's not gray or white, it's a color in between, and this color looks very ordinary, but if you look closely, you can feel that it is unique, and it is definitely not comparable to ordinary gray hair or gray hair.

And under the reflection of this hair color, even the skin of the royal line looks white.

"Sister Lianna, is this the effect of the medicine you brought...... Hair dye? ”

After being stunned for a moment, Hinata said with some tears and laughter that although her gray-haired brother is also handsome, she still likes black-haired Goyuki.

"No, it's just a side effect, you see, his hair color has started to return."

At this time, Rena reached out and touched Yuxing's hair, and at this time, his hair color had begun to slowly return to the previous pitch-black color, so Rena judged that this should be a side effect.

No, it's not a side effect. But just as Rena was examining his body, Goyuki felt a great shock in his heart.

And the reason for the shock was very simple, because he had seen this gray hair color on someone, or rather, a certain race.

The name of that group is ...... "Big Barrel Wood Clan", and the hair of all their people is this color, which is exactly the same color as the color that the Imperial Trip changed just now!