Konoha: Offer your heart to the Hokage!

“In addition to regular classes, gather in this medical classroom every Friday afternoon, where I will teach you medical ninjutsu. After graduation, the village will assign you to special and important positions.”

"Matsumoto Kaori serves as the head of the medical class and is responsible for collecting all the homework by Friday of each week and delivering it to my office at the Gospel Hospital."

That's all the content.

He ignored the eager Senju Takayuki and the confused Kazuka, and began his lecture immediately, making the most of every second:

"Lesson 1: I want you to remember the three principles of medical ninjas."

"First of all, medical ninjas must never give up on treating a team member before they die."

"Secondly, medical ninjas must never stand on the front line of battle."

"Thirdly, a medical ninja must never die before any member of the team."

"..."

"This week's homework: copy each of the three principles one hundred times, and write a one thousand-word reflection. No one is allowed to write in multiple places at once or have someone else write it for them. If I find out, I'll be kicked out of the medical class immediately."

Chapter 17 Secret Technique: Earth Grudge Curse Seal

Inside the Senju clan's mansion.

Hashirama, Mito, and Takayuki sat around the dining table.

Hashirama asked with concern, like any ordinary father, "Takayuki, what did you learn in class today?"

"The teacher assigned the class monitor position to a commoner girl named Matsumoto Kaori and taught us the three principles of medical ninjas..." Senju Takayuki replied somewhat dejectedly, "They didn't teach us medical ninjutsu, but made us copy down the three principles."

Hashirama and Mito listened with great interest, and Hashirama offered his comments:

"In Konoha, no one knows more about medical ninjas than Jin. Just listen to him obediently."

“That’s right, there’s a reason for Shen’er’s arrangement.” Mito Uzumaki chimed in, “This is to make you remember the role of a medical ninja. Medical ninjutsu is extremely difficult to master. Choosing this path means giving up the combat direction of an ordinary ninja. Survival is the most important thing.”

"I understand. Father, Mother."

Hashirama then asked, "Is there anything special about that girl named Matsumoto Waka?"

“She…” Senju Takayuki thought for a moment, “is an orphan, with a snake coiled around her shoulder, but otherwise there’s nothing special about her.”

The Hashirama couple exchanged a glance, both showing signs of understanding.

"I suppose Shen Er took pity on her and made her the class monitor to take better care of her."

"Shen'er is a man with a truly great love in his heart."

...

A week has passed in the blink of an eye.

When Shen Er returned to the laboratory, the lights were still on.

When he was away, Jigenyu was responsible for watching over Uchiha Yan and taking care of her daily life, as instructed.

Even more complicated matters are beyond the capabilities of Di Yuanyu.

Essentially, the Earthly Grudge Yu created by Yang Dun has an intelligence level of only three years old.

To ensure she was in good condition to cooperate with the experiment, many restrictions were eased. Her movement was no longer confined to the operating table, but instead she was allowed to move freely in a small room of six square meters while still in shackles.

Of course, this is on the premise that he is wearing shackles and his chakra is still sealed.

When Uchiha Yan saw Shen Er wearing the bird-beak mask again, he walked over on his own initiative.

During this period, Uchiha Yan's behavior was relatively docile.

Especially after she was allowed to move around freely, she cooperated much better during the experiment.

The problem is that once she cooperates, it becomes difficult for her to maintain the anger needed to stimulate her eyes. At times like these, Uchiha Yan would instead ask Shen Er to slap her, choke her, and so on, using brutal physical stimulation to forcibly activate her eye power.

Shen Er felt that this approach was too brutal and uncontrollable.

So they removed fish, eggs, milk, and beans from her diet, leaving her in a state of nutritional imbalance for a long time, while injecting her with an appropriate amount of adrenaline to stimulate her brain and suppress rationality.

Using the most scientific methods to enhance the most unscientific Uchiha.

"I said, how long are you planning to keep me locked up? When will my shackles and my chakra be removed?"

"Chakra won't work, but the shackles can be removed today."

He responded calmly.

During the day, he had just submitted an application to Hashirama to learn sealing techniques, with a very good reason: sealing the chakra of the injured before treating them would avoid conflict with medical chakra and would be more effective.

Hashirama readily agreed and said he would give him an answer tomorrow.

The reason he didn't agree on the spot was simply because even the God of Shinobi wasn't omnipotent. He didn't know sealing techniques. In the entire Hidden Leaf Village, probably only Mito Uzumaki knew them.

The method now used to seal chakra is similar to Hyuga's pressure point technique, which temporarily seals chakra by striking 361 chakra points.

The flaws are obvious: if the opponent is too strong, or if the restraints loosen even slightly, he can break free immediately. He can't afford to gamble on whether Uchiha Yan, having recovered his chakra, will immediately unleash Izanagi.

Only a true sealing technique is truly reliable.

But why did he give her freedom today?

Uchiha Yan was stunned: "Are you serious?"

Shen Er responded to her with action, clapping his hands: "Secret Technique: Earth Grudge Curse Seal!"

A short tentacle of the Earthly Grudge Torment pierced from his palm and burrowed straight into Uchiha Yan's mouth. Under his precise control, the tentacle reached her beating heart and attached itself to it.

"vomit!"

"What is this thing?!"

For the first time, Uchiha Yan showed a look of fear.

No matter how insane she was, she was still a woman. As that dark tentacle burrowed into her body, a wave of nausea and fear washed over her instantly.

“You can think of it as me carving a cursed seal on your heart, similar to the Caged Bird Seal of Hyuga,” Shen explained calmly. “Once you make a move that goes out of control, the cursed seal will activate, and you will die.”

"Now, you are free."

Swish

Shen Er emerged from behind and easily severed the shackles binding her.

“I know that your Uchiha clan possesses a secret technique called Izanagi, which can rewrite reality. That’s why the chakra seal cannot be broken yet; this is the foundation of our trust.”

Uchiha Yan rubbed his sore and numb wrist and scoffed:

"What kind of freedom is this? Don't worry, I, Uchiha Yan, keep my word. Even if I were to remove your mask, it would only be after I have gained greater power."

【Secret Technique: Earth Grudge Curse Seal】is a secret technique that Shen Er developed based on the results of previous animal experiments.

He wasn't lying about the effects; it was essentially a cursed seal. The only potential problem was that the Earth Grudge Tentacles used to kill the host could be physically removed.

It's not absolutely foolproof, but it's enough for now.

But besides that, he concealed something.

Under his research, the Earth Grudge Curse Seal will one day evolve into [Secret Technique: Earth Grudge Parasite].

At that point, it won't just be as simple as detonating a heart; it will be like controlling a lab rat, directly manipulating living ninjas.

However, based on the results of animal experiments, manipulating the body could potentially lead to the death of the host.

Uchiha Yan is a very precious resource, and it would be too extravagant for her to be used as a consumable in the development of the Earthly Desire.

She is a subject for specialized research on the Sharingan.

Even after regaining my composure:

"Relax your hands and feet, then it's time to inject adrenaline."

"Sigh, change to a smaller needle."

...

Gospel Hospital.

Dean's Office.

With a white snake coiled around her hand, Matsumoto Kazuka knocked on the office door.

"Teacher Shen'er, I'm here to hand in the medical class's homework."

"……Come in."

Even though he was still wearing that white haori, he was working on his tasks at his desk. When he saw Kaori come in, he stopped writing and pointed to the table: "Put your homework here."

"Yes."

Matsumoto Kaori placed her homework on the table.

Just then, something unexpected happened.

As if drawn by something inexplicable, the white snake suddenly darted towards Shen'er.

"noob!!"

Matsumoto Waka's heart skipped a beat, and she instinctively wanted to stop him, but it was too late.

Because of Xiaobai, she was bullied a lot since she was a child.

Every time I take Xiaobai out, I am met with ridicule and scolding from others, and I am pointed at and called a "freak".

Sometimes, they even get beaten up because of the White Snake.

But Xiaobai was the only relative she had left after her parents passed away. Even though she had to endure criticism and bullying, and even though she was seen as an outcast by the village, she never had the thought of abandoning Xiaobai.

Matsumoto Waka had almost already anticipated being disgusted and scolded by Shinji.

'I'm sure I'll be hated...'

The expected scene did not appear.

Shen Er looked at the white snake that had climbed onto his forearm, but instead of feeling disgusted, he held his arm in front of his chest and gently stroked the snake's head with his other hand.

"What adorable creatures."

"Its name is Xiaobai, right?"