In the original Naruto series, the various dazzling abilities of the Sharingan dominate most readers' discussions.
Whether it's the Mangekyō Sharingan's infamous "piloting-a-Gundam" Susanoo, or the individually awakened ocular techniques—Uchiha Itachi's so-called "weakling disintegrator" Tsukuyomi, Uchiha Obito's shamelessly broken Kamui, or the "flame of kindness," Amaterasu—each ability is discussed with endless enthusiasm.
Yet the Sharingan's most basic ability—hypnosis—is often completely overlooked.
In fact, in Heavenly Dao's fantasies from his previous life, hypnosis was the ability he imagined using the most.
As for where he'd use it?
Obviously, to hypnotize teachers into giving him high grades.
Ahem.
Just a harmless daydream from his chunibyo phase.
But now, standing in the Ninja World, Heavenly Dao had discovered a far more serious and meaningful application for hypnosis: treating psychological trauma in ninjas.
In his previous world, even soldiers who survived brutal wars often carried deep mental scars. Many still suffered from post-traumatic stress long after leaving the battlefield, despite receiving professional psychological treatment.
And that was in a modern society.
Compared to that, the Ninja World's understanding of mental health was practically primitive.
Judging from the behavior of many characters in the original story, the proportion of ninjas suffering from psychological disorders was probably alarmingly high.
The Uchiha clan possessed an ability as powerful and versatile as hypnosis, yet they never became a renowned family of psychological healers. Instead, they were annihilated.
It was a textbook example of how perspective could determine fate.
If his System had arrived earlier, Heavenly Dao thought regretfully, the Uchiha might have risen to unimaginable heights.
Outside the window, sunlight slanted through the room, illuminating Tsunade's slightly weary face.
She had truly suffered enough because of her hemophobia.
"Are you certain this Sharingan of yours can actually cure it?" Tsunade asked stiffly.
Her voice was skeptical, yet deep in her eyes flickered a faint, carefully concealed expectation.
Heavenly Dao stood opposite her, his expression calm. The two tomoe in his eyes rotated slowly.
"The Sharingan's most fundamental ability is hypnosis," he said evenly. "In my understanding, treating psychological trauma may be its most appropriate use."
"If the Uchiha hadn't obsessed solely over combat power and had instead explored this aspect of their abilities, they probably wouldn't have met such an end."
Tsunade fell silent.
After a long moment of contemplation, she finally nodded.
The group moved into the bedroom.
Although Tsunade didn't detect any strange odors on Heavenly Dao's bedding, she still shot him a look of disdain before lying down.
She removed her green outer robe. Beneath it, the clothes damaged earlier by Fire Release revealed fleeting glimpses of spring amid surging curves—difficult to ignore.
Heavenly Dao immediately averted his gaze, doing his best to remain disciplined.
Shizune stood nervously by the doorway, looking even more tense than Tsunade herself.
Tsunade glanced at Heavenly Dao and said coldly, "Shizune, if anything unusual happens, wake me up immediately—and I'll personally beat him into a pulp."
Heavenly Dao could only shrug helplessly.
"Tsunade-senior, please have a little more confidence in me."
"After all, you don't want hemophobia to keep tormenting you forever, right?"
"Less talk," Tsunade said sharply, taking a deep breath. "Do it."
Heavenly Dao nodded and stepped forward, leaning directly over Tsunade.
It had to be said—this woman truly had the right to be proud.
Her skin was pale as frost, her features exquisitely refined. More than that, she possessed a natural aura of authority and elegance that irresistibly drew the eye.
The tomoe in Heavenly Dao's Sharingan rotated like distant stars.
A soft yet irresistible fluctuation of chakra seeped gently into Tsunade's mental defenses.
The sensation of something foreign entering her mind made her instinctively resist.
But Heavenly Dao's voice flowed like a clear spring.
"Relax… this is treatment. Don't resist."
Gradually, Tsunade's body loosened.
As Heavenly Dao's spiritual power advanced step by step, her breathing grew long and steady, her consciousness sinking into a hazy, luminous mist.
He followed her in, stepping into her spiritual world.
At first, he found himself in a bright spring courtyard.
A young Tsunade laughed cheerfully while sitting atop Senju Hashirama's broad shoulders. Nearby, Tobirama stood with a stern expression, secretly slipping her a piece of candy when no one was looking.
Warm sunlight bathed the scene. Cherry blossoms drifted through the air.
It was Konoha's golden age.
Then the scenery shifted.
Tsunade had grown into a heroic and confident young woman, admired by all. The villagers called her the "Princess of Konoha."
With unmatched medical skill and monstrous strength, she stood as an existence countless people looked up to—radiant, proud, and unshakable.
But as Heavenly Dao pressed deeper, shadows began to gather.
Tsunade entered adulthood.
First came the death of the First Hokage, Senju Hashirama. She tasted loss for the first time.
Not long after, the Second Hokage, Senju Tobirama, also fell in battle. His disciples had gone out with him as guards—yet only they returned.
Even his body was recovered later.
One pillar after another collapsed.
Before Tsunade realized it, she had become the one expected to shield others from wind and rain.
She forced herself to keep moving forward.
Then came her younger brother, Nawaki.
The boy who dreamed of becoming Hokage died tragically, torn apart by explosive tags during a mission.
Tsunade cradled his broken body, blood soaking her hands—and her heart.
And finally, there was Kato Dan.
That gentle yet resolute man who was willing to give everything for the village.
His internal organs were destroyed by the enemy.
Tsunade exhausted every ounce of her strength trying to save him—only to watch helplessly as his life slipped away.
Blood poured forth, dyeing her white medical coat red.
At that moment, her beliefs shattered completely.
A corner of her spiritual world collapsed with a deafening roar.
It was then that her hemophobia was born.
From that day onward, Tsunade could no longer face blood. At its sight, she would tremble, break out in cold sweat, and sometimes even faint.
Heavenly Dao stood at the edge of the collapsed ruins, his brow tightly furrowed.
He attempted to use the Sharingan's power to blur and weaken the memory—to reduce its impact.
But Tsunade's spiritual world immediately reacted violently.
It resisted like a wounded beast.
This pain was her truth.
Even if it hurt, it was proof that she had lived, loved, and lost.
"Forcible erasure won't work…" Heavenly Dao murmured.
"Then… what about adding something instead?"
He focused deeply and began reconstructing Kato Dan's final moments.
Dan still fell.
Blood still flowed.
But this time, as life faded from his eyes, Heavenly Dao implanted a new image.
Dan looked at Tsunade, the corners of his lips lifting slightly.
"I believe in you," he said softly. "You'll meet someone who can accept all your fragility."
"He might not be as gentle as me," Dan continued, "but he'll understand your strength better than anyone."
This was the new support Heavenly Dao created for Tsunade's heart.
After all, despair wasn't the most terrifying thing.
Hopelessness was.
As for the silhouette of that "someone," Heavenly Dao deliberately left it undefined.
Yet perhaps because it carried traces of his own spiritual imprint, in Tsunade's subconscious, that figure faintly overlapped with Heavenly Dao himself.
It was only a subtle mark.
Neither Tsunade nor Heavenly Dao realized it.
Several minutes later, Tsunade's eyelashes fluttered.
She slowly opened her eyes.
Her first action was to cut her palm slightly.
Blood welled up.
She stared at it.
Her body still felt weak—but she wasn't shaking.
She took a deep breath.
Her heartbeat was steady.
"It feels…" Tsunade murmured softly, disbelief coloring her voice. "Like I'm not that afraid anymore."
Heavenly Dao stepped back, sweat beading lightly on his forehead.
"I only helped you move the stone pressing on your heart," he said. "True healing still depends on you walking the path yourself."
Shizune rushed forward and supported Tsunade anxiously.
"Milady! Are you alright? Do you feel uncomfortable anywhere?"
Tsunade waved her hand dismissively, her gaze fixed on Heavenly Dao.
Complex emotions stirred within her.
They hadn't known each other long, yet this young man had repeatedly exceeded her expectations.
"Perhaps," she said slowly, "you've expanded medical ninjutsu into an entirely new field."
Heavenly Dao smiled faintly.
"Just a small contribution."
Tsunade snorted—but this time, she didn't mock him.
For some reason, simply looking at Heavenly Dao made Tsunade's long-wandering heart feel unexpectedly stable.
It wasn't a bad feeling.
A fleeting thought passed through her mind—
And then quietly faded away.
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