Start with the Mangekyō and leave Konoha with Madara.

In Konoha Village, the next morning, Jing was called into the laboratory by Tobirama.

"Adjusting the ratio of the fusion agent is always a time-consuming and laborious process, but we all know that once you lose your eyesight, the front line will collapse immediately." Tobirama said seriously: "Time is running out."

"So, teacher, what you mean is..." Jing knew in his heart that since Tobirama called him here, he must have already had an idea.

"The mutual fusion of gene fluids requires a lot of experiments to obtain data. Obviously, we cannot afford to waste either time or resources."

Tobirama looked at him and said slowly, "I remember that your eye technique can not only observe the future in front of you, but also change the possibility of the future by consciously interfering with reality, so as to choose the direction you decide, right?"

"Yes."

Jing nodded, thinking that he was worthy of being a teacher, as he understood my pupil technique so thoroughly.

"That's good. I plan to use your predictive ability to avoid failed fusion ratios, thereby greatly reducing the number of experiments." Tobirama explained and took him to a new experimental instrument.

This is a machine that can automatically control the solubility ratio. By inputting different numbers, it can produce solutions of corresponding solubility, and then control the fusion of the genetic liquid between the columns and the genetic liquid of the mirror.

With Tobirama's careful introduction, Jing quickly learned how to operate the instrument.

"Next, open 'Takamagahara'. In order to avoid excessive damage to your left eye, you need to make your thoughts move as fast as possible..."

Tobirama pointed to the glass container inside the glass, "Choose the right ratio, and the gene fluid will fuse immediately. Whether it succeeds or fails, it will be in the future you can see."

"I understand!"

Jing opened his eyes wide, and the kaleidoscope in his left eye was spinning. His fingers were placed in front of the instrument, and although he hadn't moved yet, countless timelines appeared in his eyes, like a complicated fork in the road.

As the thoughts in his mind kept changing, the future in Takama-ga-hara's vision kept flickering. Countless pictures flashed as quickly as movie films, and each picture was one of the possible futures.

But without exception, all failed!

His face was calm, but his brows were slightly furrowed and beads of cold sweat appeared on his forehead. It was obvious that he was going through a huge mental challenge.

Tobirama looked intently, his eyes fixed on Jing's face, and even he couldn't help but feel nervous.

Time passed minute by minute, and finally, after a long 2 minutes, Jing closed his eyelids tiredly and turned off his Sharingan.

Tobirama noticed that his left eye was completely bloodshot and looked bright and vivid.

"I've seen the future 14,000,605 times." Jing opened his eyes. Although he didn't do anything, he was panting.

"What's the result?" Tobirama held his breath and held the handrail tightly with his right hand.

Jing stretched out a trembling finger, "There is only one set of data that is correct... and it is the only set!"

He carefully and solemnly entered a set of data and pressed the button.

"Buzz..."

The instrument ran and mixed at a rapid speed until a drop of blue solution fell into the glass container and merged with the mirror's genetic fluid to become a dark purple color.

Immediately afterwards, a drop of golden solution flowed down the dropper and fell into the container along with Tobirama's heart, which was almost beating in his throat.

"Gududu."

Strands of golden threads spread and diffused in the purple droplets, and finally after a slight tremor, the droplets slowly turned into red-gold, and finally calmed down without any ripples.

"Success...success!"

Tobirama's face showed a long-lost excitement. He grabbed Jing's hand, his pupils trembling: "It's hard to imagine! Jing, you have accelerated our progress by several decades!"

“This set of data is so important!”

"If it weren't for your pupil technique, even with sufficient resources, I don't know how long I would have to conduct the experiment alone. It would be impossible to complete the experiment before the end of the war! You... have accomplished a great feat!"

Jing forced a smile, and said with tired eyes: "So, can I inject the gene fluid now?"

"Almost done!" Tobirama quickly wrote down the data that Jing had entered last, and hurried away. "Don't worry, the next task is to try to inject the gene fluid into your cells. We can only inject it after confirming that everything is normal. We only have one chance, so we can't be careless!"

He immediately got down to work. "We have already obtained your cell sample. You can take a rest during this period..."

……

In the 14th year of Konoha, early January.

The Kumogakure troops on the front line regrouped and launched another fierce attack on Mount Kikyo.

Uchiha Kagami immediately rushed back to the Kikyo Mountain position and fought alongside his Konoha companions.

However, this time the attack by Kumogakure was extremely fierce, with a momentum of desperate efforts. It seemed that the Kumogakure Village had dispatched all its elite troops and would not stop until it had conquered Mount Kikyo.

Kinkaku was fighting on the battlefield like a madman, and even though he was seriously injured, he still madly bombarded the Tailed Beast Ball at Kikyo Mountain. If Kagami had not withstood his pressure and used Flying Thunder God to transfer his companions in time, the Konoha army might have suffered heavy casualties.

But even so, the Sarutobi clan and the Ino, Shika and Chou clans still lost many of their companions. Although they held their positions, Jing still blamed himself for it.

On the eastern front, the troops led by Uzumaki Mito have been fighting the Second Raikage intermittently for several weeks. Although they have temporarily pinned down the enemy, the situation is not optimistic.

The reason was that the enemy changed its tactics. The Second Raikage and Ginkaku split their troops into two groups. The Raikage continued to command the surprise attack force, while Ginkaku started a guerrilla war, trying to bypass the interception army and go straight to Konoha Village.

This forced Mito to disperse some of his troops, but fortunately there were members of the Hyuga clan in the team, so they were able to detect the enemy situation in time before the other side broke through the blockade.

But Ginkaku was as cunning as a loach. When Mito was not around, he used his martial arts to kill everyone. But when Mito came, he would never fight to the end and would turn around and run away without even saying hello. He had no martial ethics at all.

This went on several times, leaving Mito exhausted and miserable, but he still had to muster up his strength to resist the Raikage's attacks.

……

At the end of February, Tobirama finally completed the cell sample experiment. After countless analyses and comparisons, he found that the cell tissues of Jing could be perfectly integrated with the genetic fluid of Hashirama. The Yin and Yang escape techniques reached a perfect balance and became one.

Next, he handed over all matters in the village to the higher-ups, and regardless of the hard work, he stayed in the research institute all day and all night, just to increase the success rate of the experiment, and to extract some genetic fluid from Hashirama again.

He repeated the previous experiment several times, and after confirming that it was correct, he notified the intelligence team and let Jing return to the village.