Shizune taught Sakura the Ninja Tool: Poison Kunai technique to assassinate Sasuke, which grazed Naruto's cheek. Naruto was immediately affected by the poison, paralyzed and unable to move for a time.
In the ninja world, not only medical ninjas played with poison.
For the puppeteers of the neighboring Hidden Sand Village, coating their puppet weapons with poison was an essential tactic.
Combining the eerie mechanisms of the puppets with painful and deadly poisons, puppeteers specialized in torture.
Another example was Hanzō of the Salamander, the man who defeated the combined forces of Tsunade, Orochimaru, and Jiraiya.
His poison was troublesome even for Tsunade.
It could be said that the upper limit for poison was quite high.
The problem was that the necessary poisons were hard to find, either being biological toxins from Ninja Beasts or newly formulated toxins created by the user.
Kiyoshi picked up the scroll, chatted with Nonō Yakushi for a while, and then departed.
Nonō Yakushi had other duties and couldn't accompany him all the time.
***
The Uchiha Compound.
"That Byakugan is… a person from the Hyūga clan." Mikoto, returning from grocery shopping, spotted a girl in a maid-like outfit walking in the distance.
The girl walked down the Uchiha clan streets with her head down, not saying a word.
She seemed reluctant to let anyone see her Byakugan.
"What is she doing in the Uchiha compound?" Mikoto was puzzled.
After thinking for a moment, she followed behind Natsu Hyūga, wanting to see the reason for a Hyūga's visit to the Uchiha.
Before long, Natsu Hyūga stopped in front of a somewhat dilapidated residence, stepped forward, and knocked on the door.
"Is Kiyoshi home?" Natsu Hyūga carried a basket in her hand, filled with pastries.
Madam Ginka first instructed her to deliver a generous gift and then return to confirm an appointment time.
This was the etiquette of the Main Family, whose every word and action was governed by rigid, meticulous education, demonstrating the demeanor of a noble house.
However, Natsu Hyūga found these rules cumbersome. Fortunately, the Branch Family wasn't so strict.
If the Main Family received an elite education, they received ordinary schooling, with only a few secret techniques passed down, which was more than civilian ninjas got.
The true core techniques of the Gentle Fist style could only be learned and inherited by the Main Family.
The Branch Family was not qualified to learn them.
"Kiyoshi?" Natsu Hyūga knocked again, then waited for a while.
Unfortunately, there was still no response.
She looked disappointed. It seemed Kiyoshi was not home, and this trip was for nothing.
She would have to go see if Kushina Uzumaki was home.
Mikoto, who was following behind, looked up. This was Kiyoshi's home.
Looking at the girl, she was probably a contemporary of Kiyoshi's.
"Not bad, this kid." Mikoto thought about it and concluded it was just typical youthful antics.
"Fugaku and I should be getting there too." Mikoto mused.
Barring any unforeseen circumstances, they would be married within the next year or two.
She hoped the increasingly tense situation wouldn't affect them.
If war broke out, Mikoto didn't think there would be time for a wedding.
She wouldn't even have time to retire.
Unless everything was done before the Ninja World War, she might still have a chance to stay on the home front as a housewife.
Of course, if the war turned dire, a housewife like her would also be affected and would return to the fight from retirement.
When Mikoto came to her senses, Natsu Hyūga had already left with the basket.
She hadn't waited for Kiyoshi; Kiyoshi wasn't home.
Mikoto shook her head, laughing at herself for thinking about trivialities before she had even retired.
She carried the vegetables in her cloth bag and walked toward her own home.
***
Before returning home, Kiyoshi had first gone to see Kurenai and put her through some Taijutsu drills.
He was taking payment and delivering a service.
When he was done, Kiyoshi returned to his home.
He began reviewing the new scroll he had acquired today.
With the foundation of medical knowledge, Kiyoshi made rapid progress in studying toxicology; many things were interconnected.
"You have acquired the Trait: [Apprentice Poison Ninja (White)]."
[Trait: Apprentice Poison Ninja (White)]
[Requirement Achieved: Achieve basic mastery of 1 rudimentary poisoning method.]
[Progress: 1%.]
[Effect: Your accumulated knowledge in the way of poison use and administration is enhanced. Training speed is increased by 5% on top of the original base.]
[Note: Can be further evolved later.]
Kiyoshi dismissed the [Trait] panel and continued reviewing.
He could fully grasp this [Trait] in one night.
With [Reading Absorption (White)], [Basic Memory (White)], and the cumulative 10% increase in Yin Release chakra.
Kiyoshi's thinking and learning abilities had improved significantly.
When he had time, Kiyoshi planned to acquire the related Wind Release [Trait].
The more Ninjutsu he mastered, the more composure he would have when facing various environmental challenges.
***
"This is far enough." Hazuki Uchiha turned back.
She and Daiyu Yamada stood at the boundary between the Uchiha Compound and the Hidden Leaf streets.
"Alright, be careful." Although he knew the Uchiha Compound was extremely safe, with the Hidden Leaf Military Police Force patrolling, Daiyu Yamada still said so.
He waved his now-healed arm and bid farewell to Hazuki Uchiha.
Today, Daiyu Yamada and Hazuki Uchiha had gone to see Granny Cat again. Hazuki even mentioned purchasing ten extra sets of chainmail to deal with the increasingly frequent missions involving enemy ninjas.
Daiyu Yamada strongly supported this; Hazuki Uchiha's safety was paramount.
For him, every day spent with Hazuki Uchiha was unforgettable.
"…Okay." Hazuki Uchiha gently nodded.
She told Daiyu Yamada to leave first, and after his figure disappeared into the dim streetlights, Hazuki Uchiha walked close to the edge of the compound.
She was going to find Kiyoshi Uchiha.
***
"Hazuki-nee, this is your first time coming to my house, isn't it?" Hearing the knock on the door, Kiyoshi put down the scroll, placed the white snake from his arm onto the tatami mat, and stepped out in his wooden clogs.
He had just acquired the Green [Medical Genin] Trait, and now a Genjutsu scroll was being delivered right to his doorstep.
The effect of the Green [Medical Genin] Trait was similar to the Lightning Release Genin Trait, both giving a 20% effect. The difference was that Kiyoshi's circulatory system gained better adaptability to Yang Release chakra.
Medical Ninjutsu was essentially a utilization of Yang Release.
Both Yin Release and Yang Release were frequently used in the ninja world.
Yang Release was used for developing and applying physical strength.
Yin Release was used for developing and applying mental strength.
These two were much rarer and more advanced than ordinary elemental Ninjutsu, and apart from Medical Ninjutsu, most were secret Ninjutsu passed down within ninja clans.
Ordinary ninjas had no way to learn them.
Medical Ninjutsu was already one of the relatively fair, open, and equitable channels for advancement and learning.
As long as one possessed the Yang Nature, they could pass the preliminary selection for medical ninjas at the Hidden Leaf Hospital.
With a little talent in chakra control, one could officially begin their studies and be taught valuable knowledge.
***
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