At this point in time, Tsunade was still in her prime.
She was only in her early thirties.
Yet under the constant influence of the Yin Seal, her appearance remained frozen in youthful perfection. Her skin was flawless, her figure elegant, and her presence carried a rare blend of youthful vitality, mature composure, and the quiet heroism of a legendary shinobi.
It was the kind of beauty that didn't need to try.
And because of that—
Ren couldn't help but sneak a few extra glances.
On the other side of the room, Tsunade noticed.
Her golden-brown eyes narrowed slightly, sharp and perceptive as ever. Her gaze swept across the doorway before settling on Ren's face for a few seconds—long enough to make him feel like he was being completely seen through.
Then she spoke.
"Are you the two brats Jiraiya recommended?"
Her tone was calm, but carried undeniable authority.
Without waiting for a reply, she pointed toward two patients lying near the window.
"Go treat those two injured patients. Shizune, keep an eye on them."
"Yes, Lady Tsunade."
Shizune immediately responded, stepping forward with professional seriousness.
---
This was expected.
A test.
Ren exchanged a brief glance with Rin Nohara, and without hesitation, the two moved toward the hospital beds.
They sat down.
Then began.
Cleaning. Debriding. Disinfecting.
Every movement precise. Controlled.
Ren's hands moved steadily as he carefully removed damaged tissue, applied disinfectant, and prepared the wound for treatment. Rin, beside him, worked with equally practiced precision.
Behind them, Shizune paced slowly, observing.
Her eyes first landed on Rin.
There was approval.
Clean technique. Proper sequence. Stable chakra control.
For someone her age—especially without specialized medical training—this level was already impressive. She had reached the threshold of an Advanced Medical trainee.
Then—
Shizune turned her gaze to Ren.
And her expression changed instantly.
From calm… to surprise.
From surprise… to shock.
"Huh…?"
Her eyes widened.
Then she immediately raised her voice.
"Lady Tsunade! Please come take a look—this isn't normal! This continuous cell activation… something's wrong!"
---
Tsunade frowned.
She didn't move at first.
There was a subtle hesitation.
Then, suppressing her discomfort, she stepped forward. Her fingers unconsciously tightened against her arm—forcing herself to endure the sight of blood.
Her hemophobia… was a secret known only to a select few in Konoha.
To the outside world, she was still the legendary Medical Ninja.
Unshakable.
Unbreakable.
As she approached, her gaze locked onto Ren's hands.
And then—
Her pupils shrank.
"This…"
Her voice lowered, tinged with disbelief.
"This continuous cell activation… and this level of deep tissue regeneration…"
She stared directly at him.
"Brat, what ninjutsu are you using? Don't tell me… this is just the basic Healing Technique?"
---
Ren didn't stop.
His hands remained steady, chakra flowing smoothly.
"…Of course."
He took a slow breath before speaking.
"Lady Tsunade, I need to correct one thing."
His tone was calm—but firm.
"The Healing Technique is not 'ordinary.'"
He paused.
Then said something that stunned everyone present.
"It's simply… foundational. Like a quiet mother who gives birth to countless advanced Medical Ninjutsu, yet never seeks recognition."
"…I think the Healing Technique is like a mother."
"It should be able to produce this kind of gentle, life-giving healing effect."
---
Silence.
Tsunade blinked.
"…?"
For a moment, she didn't know how to respond.
What is this kid talking about?
And yet…
There was a strange logic to it.
After all, most advanced Medical Ninjutsu were built upon the Healing Technique.
Still—
Calling it mother?
This kid was definitely… unusual.
---
At that exact moment—
Inside Ren's mind, something stirred.
A soft, amused voice echoed.
[Healing Technique: Ren, you child… honestly, just to make me happy, you even called me 'Mama'?]
Ren froze internally.
"…Huh?"
A familiar notification appeared.
---
[Healing Technique Favorability +3!]
[Current Favorability: 78/100 (Attachment)]
[Special Event Triggered]
---
Ren's thoughts went blank for a second.
A special event?
Just because I said that?
---
[As the most basic Medical Ninjutsu, the Healing Technique has always been quiet, never seeking fame…]
[But deep down, she longs to prove her value.]
[Mission: Heal 100 patients using the Healing Technique]
[Do you accept?]
---
Ren didn't hesitate.
"Accept."
Of course he would.
A mission was a mission.
As for whether the system's personality was… questionable—
That wasn't his problem.
---
[Healing Technique: Fine then~ This time, 'Mama' will help you. Let this woman see what the 'ordinary' Healing Technique can truly do.]
---
The moment the voice faded—
Something changed.
Inside Ren's body, a rhythm began to pulse.
Warm.
Dense.
Alive.
Chakra surged from his palm—not violently, but like a steady stream of life itself. A soft green glow enveloped the patient's wound.
Then—
The impossible began.
---
The shredded muscle fibers began to reconnect.
Damaged blood vessels sealed themselves.
Torn tissue regenerated at visible speed.
---
It was as if an invisible loom was weaving flesh back together.
Every strand aligned perfectly.
Every cell moved with purpose.
Even the mangled thigh—previously a horrifying sight—began to stabilize under the glowing light.
It wasn't complete healing.
But it was—
Unbelievable.
---
Even more shocking—
Ren barely felt any strain.
Normally, this level of healing would drain a massive amount of chakra.
But now?
It was effortless.
As if the technique itself was supporting him.
---
"This…!!"
Tsunade's voice trembled slightly.
Her eyes were locked onto Ren.
Unblinking.
Intense.
As if she were witnessing something precious beyond measure.
---
A genius.
There was no doubt.
This was a medical genius.
---
Her thoughts raced.
To elevate the most basic Healing Technique to this level…
What would happen if he learned the Mystical Palm Technique?
The answer was obvious.
He would soar.
---
She exhaled slowly.
The faint hesitation she had earlier was gone.
In its place—
Excitement.
Expectation.
---
Nearby, Shizune was equally stunned.
She had seen talented medical ninjas before.
But this?
This was something else entirely.
---
Tsunade's gaze sharpened.
In that moment, she made a decision.
---
After the Third Great Ninja War, she had grown disillusioned.
Her hemophobia.
Her losses.
Her fading will to continue.
She had even considered leaving Konoha with Shizune.
But now—
Seeing Ren—
A spark reignited.
---
If I can train this child…
Then Konoha's future in medical ninjutsu… will be secured.
---
She cleared her throat.
Then spoke.
"Brat."
Her tone was firm, but no longer distant.
"For you to develop the Healing Technique to this level… you clearly have talent."
She paused briefly.
Then gave her order.
---
"Starting tomorrow, unless you are on a mission—report here every morning at 9:30 sharp."
The meaning was clear.
Tsunade had decided to personally train Ren.
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