Weakness

"A strange stone or mineral, is it?" Sasuke was too lazy to remember its characteristics and simply said, "I'll look it up when I get back."

"Oh, right, our clan has a few books on strange objects and records of the customs and cultures of various countries. We might as well lend them to you!" He thought for a moment and then said, "By the way, what do you need these things for? Are they related to your... nuclear energy?"

Sakura said seriously, "Of course it's relevant. What I'm looking for is uranium-containing ore, which is the fuel for nuclear fission. Without it, nuclear fission cannot be achieved. And nuclear fusion probably also requires the energy from nuclear fission to ignite. So, if we can't find this raw material, then the so-called utilization of nuclear energy will just be empty talk."

The key issue is that she couldn't find a single word about uranium mines in the publicly available information from Konoha.

So I had no choice but to seek help from Sasuke's family's information.

Most of the Uchiha clan's property and land have been taken back by the village.

Fortunately, Sasuke still had the original copies of those secret scrolls, training notes, Ninjutsu insights, and various miscellaneous books. These were the foundation for Sasuke's revival of the Uchiha Clan, and he had always been careful to preserve them.

Sakura Haruno had previously taken the time to review Konoha's information on this topic. However, unfortunately, as Chunin, the level of information she could access was not high enough, and she hadn't found anything yet. Of course, she could submit a report requesting access to these materials; given her status Hokage's disciple, it would simply be a matter of following procedure.

The problem is, however, that this Ninjutsu might very well be one of her ultimate techniques.

She preferred to search slowly on her own rather than make a big fuss right away and let everyone know she wanted to develop this kind of Ninjutsu. After completing the procedures, the news had already leaked out quite a bit.

Therefore, consulting the Uchiha Clan's records is clearly her best option at present.

The development of the Yin Seal that can utilize fusion energy will inevitably be a long process. Sakura Haruno is mentally prepared that even if everything goes smoothly, it will take two or three years to see results.

Recently, she has focused her main efforts on developing the Yin Seal.

From the previous battles, Sakura had fully grasped the advantages and disadvantages of Cherry Blossom Impact - Stage Two.

The medical Ice Clone, touted as a 100% simulation of the original, is, after all, not Sakura's true body. When used for testing, it was always separated by a layer, so the sensations and experiences gained couldn't be as real and tangible as those experienced with her actual body. Thanks to the insights gained from this high-intensity combat, after recovering from her injuries, Cherry Blossom Impact - Stage Two.

Although I ended up covered in injuries, the gains this time were enormous: the Cherry Blossom Impact - Stage Two has been basically completed, saving me several weeks of adjustment time.

However, this does not mean that Sakura Haruno will give up using Ice Clone.

One such adventure is enough.

Cherry Blossom Impact's experiment was extremely risky. She didn't want to gamble on whether she had the luck of being a protagonist and could get away with something reckless. Using her own body directly for the experiment could cause serious damage to her nervous system if something went wrong, enough to ruin her forever.

In short, after completing the Cherry Blossom Impact - Stage Two, Sakura Haruno's next task is to begin researching the second stage of the Yin Seal.

Currently, her combat system has been initially completed.

Demonic Mirroring Ice Crystals, Cherry Blossom Impact, Monstrous Strength Technique, and Wind Blade Torrent support all her tactical needs. With these four techniques, along with her matching Ninjutsu, she is confident that she can defeat any enemy below the Kage Level when she goes all out.

However, going all out requires sufficient Chakra support.

A massive Frost Ice Burial combined with the Demonic Mirroring Ice Crystals was enough to deplete most of her Chakra. If we consider the need to use Ice Release or Water Release to set up the field, her own Chakra alone wouldn't even be enough to continuously use these four techniques in actual combat.

Although Tsunade gave her the Yin Seal, which greatly increased her available Chakra, it didn't turn her into the type of Naruto who could squander Chakra like Naruto—but then again, Sakura doesn't think Naruto can squander Rasengan like that either.

Regardless, the Ninjutsu she has recently developed and used has begun to move in the direction of being suitable for fighting Kage Level opponents. The three techniques in stage two and Wind Blade Torrent only have enough speed, experience or Secret Technique to counter them, which are only for Kage Level or higher powerhouses; their power is far beyond what is needed to deal with ordinary opponents, as she clearly felt when carrying out Anbu missions.

However, the problem with the Yin Seal is that, relying solely on her own meager Chakra reserves, it is difficult to quickly accumulate Chakra.

Sakura consumes a lot of Chakra. Because she has many Ninjutsu she wants to develop, most of the Chakra saves up is used for experiments. Otherwise, Cherry Blossom Impact's development progress would not be so fast.

So she was conflicted—if she wanted to accumulate more Chakra, she would have to do fewer experiments, which would slow down the development of Ninjutsu; conversely, if she wanted to improve the speed of Ninjutsu research and development, she wouldn't be able to accumulate enough Chakra.

Her usual practice is to reserve a certain amount of Chakra, such as two or three times her own physical strength, and only conduct experiments with Chakra exceeding this limit.

This battle with Kimimaro once again demonstrated that Chakra, no matter how much you have, is never enough.

Her physical body is indeed not very impressive. Although Ice Release is constantly improving her physique, the process is slow and there are no obvious results yet. Therefore, many people's first impression of her is that she looks weak and frail, too slender, and has little fighting ability. If we don't talk about the extraordinary Ninjutsu she has developed, then this assessment is quite appropriate.

After other deficiencies were gradually made up for, the weakness of insufficient Chakra became more and more obvious.

Therefore, in the next phase, Sakura will focus on the further development of the Yin Seal.

Of course, the primary task is to learn the Sealing Jutsu before one is qualified to modify the Yin Seal.

The second consideration is the energy source of the Yin Seal.

Using a clone is the easiest and most convenient method—if she has the necessary cloning technology.

If she collects energy from the power plant, the amount of Chakra she can obtain will be even greater. However, she will need to put more thought into how to convert electrical energy into energy that a ninja can control.

However, Sakura Haruno felt that these were just transitional means. Her ultimate goal was to seal the huge energy source directly into her body and extract it through the Yin Seal, so that she could obtain an inexhaustible source of Chakra.

Of course, zero-point vacuum energy is enormous, but unfortunately she has no idea how to control it yet; a reasonable goal is to master nuclear energy.

Although this goal is far away, she has already planned out how to take each step.

(Guaranteed first update! 1/)