According to the vague memory from my previous life, Tenseigan eyes are an upgraded version of white eyes, and it is a top dojutsu comparable to the rinnegan eye.

As far as Kuroto knows, there are two ways to evolve Byakugan into Tenseigan. ​​

-The first method is to use that bloodline on the moon, combined with the bloodline of the Hyuga clan on the earth, like the Otsutsuki clan, to evolve the Byakugan into Tenseigan.

-The second method is to merge a lot of white eyes.

The first method was directly discarded by Kuroto as he does not have a method to go on the moon.

As the first method is also not very hopeful for him. He is not from the main Hyuga family, nor could he get the white eyes of the Otsutsuki clan on the moon.

And for the second method, because of the "cage bird", the white eyes of the separated family will be destroyed instantly after being removed or the death of the owner, so relying on the clan alone will not make enough of the white eyes for evolution process.

Both methods seem to be unworkable, but from the second method, Kuroto has a new idea.

Regardless of whether it's a Byakugan or Sharingan, all blood inheritance boundaries are actually the concrete manifestation of genes. If you can't get enough Byakugan, can you not start from the genetic aspect and collect a large number of Hyuga clan genes?

And then maybe fuse these genes, directly from the genetic level from the inside out to evolve Byakugan into Tenseigan?

Based on this bold conjecture, Kuroto focused on learning genetic knowledge from Orochimaru.

Through continuous learning and observation, Kuroto has made an amazing discovery, that is, there are 33 special gene sequences in all of the genetic combinations of the Hyuga Clan.

Through further observations, Kuroto also found that in different clansmen, from 33 groups of special gene sequences, the number of sequences in the active state is also different.

As for Kuroto's case, only the 17-33 part of the 33 special gene sequences in his body is in the activated state, while the 1-16 part of the sequence is in the inactive state. The details he collected indicate that of the dozens of other Hyuga clansmen genes he collected are also in a similar situation, and only some of the 33 special gene sequences are active.

This discovery further confirms Kuroto's guess.

He even suspects that if all 33 special gene sequences in the body can be activated, then every Hyuga clansmen can evolve Byakugan into Tenseigan

In an instant, this thought spread madly in Kuroto's heart.

Thanks to the war, the Kuroto was able to collect a large no. of genetic samples of the passed away Hyuga clansmen under Orochimaru's arrangement. After screening and comparing hundreds of genetic samples, he successfully extracted the 4-16 part. Special gene sequence in the activated state.

Counting the special gene sequences that are activated in the 17-33 part of Kuroto's own body, what he lacks is only the first three groups of activated sequences, 1-3 of the 33 special gene sequences.

Kuroto had collected enough genes of the separation, but none of the three special genes sequences 1-3, were found in the active state, so naturally, he set his sights on the main family.

But the main family seldom went to the battlefield in person. Even if it was on the battlefield, they were under protection. It is definitely not easy for a ninja at the level of Kuroto to reach it. Therefore, he had not been able to obtain a gene sample of the main family.

To this end, he had to ask Orochimaru to take action.

Unexpectedly, Orochimaru did not reject Kuroto's request, but even for Orochimaru, as one of the three Sennins, wanting to steal the genes of the main family. It was not an easy task.

Things dragged on for more than a year, and the experiment was interrupted.

Although distressed, Kuroto knows that currently, he is just a small fly struggling to survive. If he wants to change his destiny, he can only find opportunities on his own and cannot put his hope on some sort of miracle.

But when Kuroto hit his idea on Hinata who was about to be born, he never thought that this time when teacher Orochimaru bid him farewell, he actually sent a sample of blood and skin tissue from the main family.

Kuroto thought in his heart: "Orochimaru's defection should have happened not too long in the future, but he not only didn't mean to take me away, but he also sent me the test materials I needed urgently before leaving. What was his intention? What? Let me stay in the village with peace of mind and be his spy?"

Whether it was Orochimaru's recent actions or based on the vague memories of previous lives, Kuroto can conclude that currently, Orochimaru isn't very interested in Byakugan, and at this time Orochimaru also sent him urgently needed experimental materials. Obviously Not to study Byakugan, but to assure him.

Thinking of this, Kuroto secretly laughed at himself: "The bird in the cage doesn't seem to be useless!"

Undoubtedly, the decisive reason why Orochimaru chose to keep Kuroto in the village was that because of the "cage bird" on the forehead of Kuroto, he no longer had the right to defect. If Kuroto defected, he could be disposed of easily through the "cage bird", therefore Orochimaru was naturally not interested in taking away a useless corpse.

As the experiment progressed, Kuroto discarded his chaotic thoughts and focused his attention on the experiment.

The blood and flesh tissue of the clan sent by Orochimaru is very vigorous. If Kuroto guessed correctly, this is probably the blood and flesh tissue of the patriarch, and it is also the gene sample that Kuroto wanted most.

Because the flesh and blood tissues are very fresh, the gene extraction process is abnormally smooth, and after comparison, he was surprised to find that out of the 33 sets of special gene sequences of Hiashi Hyuga, 28 sets are in the activated state, and it also includes 1-3 special gene sequences that Kuroto needs most.

"There are as many as 28 groups of special gene sequences that are in the active state. You deserve to be the Patriarch!"

Thinking of the strength of Hiashi Hyuga close to the Kage level, Kuroto was relieved immediately.

Hiashi Hyuga, who is in his prime, is undoubtedly the strongest of all the clansmen. Such a powerhouse definitely possesses the best genes in the family, which is a reasonable thing.

Throwing his emotions aside, Kuroto concentrated on extracting the three groups of special gene sequences in the active state he dreamed of.

So far, all the special gene sequences in the activated state of 1-16 that Kuroto lacked have been collected.

"Whether I can change my destiny all depends on this!"

Rejoicing, expecting, worrying, hesitating, all kinds of emotions rushed to my heart, making Kuroto a little confused for a while.

He wanted to scream up to the sky, want to vent the depression and fear that had been in his heart for so many years, but the one-eyed viper on his shoulder made him dispel all thoughts.

After sighing lightly, Kuroto again discarded all emotions one by one.

Immediately afterward, he calmly filled the extracted gene fluid into a small thermostatic bottle, then took out a scroll and sealed the thermostatic bottle inside.

The defection of Orochimaru will inevitably cause shock in the village.

To make sure that he is not implicated, Kuroto has a lot of hands and tails to deal with. First of all, this is the laboratory. He must completely clean up his traces in the laboratory, and even the traces of his experiments must be completely removed to avoid any possible attachments to the grapevine related to the special gene sequence fusion experiment he had conducted.