"Hehe…"
Inside the inn.
Ren received two scrolls delivered back by his wood clone and smiled lightly.
He opened the storage scroll that contained countless secret techniques, forbidden techniques, and sealing arts.
The contents were dazzling.
Yamanaka clan techniques, Nara clan techniques, Akimichi clan techniques…
Eight Gates, Spirit Transformation Technique, Flying Thunder God Technique, Edo Tensei, Tandem Paper Bombs…
Three Directions Seal, Five Elements Seal, Evil Sealing Method, Four Symbols Seal, Reverse Four Symbols Seal, Root Tongue Eradication Seal, Self-Cursing Binding Seal…
"Still, the sealing techniques Danzō has collected are ultimately limited…"
Ren stored away the other secret and forbidden techniques, leaving only the sealing arts.
He began organizing them one by one.
"The Uzumaki clan, being the orthodox masters of sealing techniques, definitely possess a much more complete system."
"Ren! It's me!"
A knock sounded.
Tsunade's voice came from outside.
"Tsunade-nee, you're here."
Ren opened the door.
Seeing the beautiful woman before him, he smiled.
"You brat. The moment you came back, you locked yourself in your room."
Tsunade walked in.
"I thought you were eagerly studying that immortal cultist from the Jashin Cult."
Her gaze swept across the room.
When she saw the numerous sealing techniques spread everywhere,
her eyelids twitched violently.
"You got these from Danzō?"
The value of these sealing techniques was immeasurable.
If news spread,
every nation would probably try to seize them at all costs.
"Yeah."
Ren nodded.
Stretching lazily, he said with a smile,
"That Jashin cult guy isn't going anywhere anyway… Right now I'd rather focus on mastering these sealing techniques as soon as possible."
"I remember you once said your Wood Release is special. With just a drop of blood from a bloodline-limit ninja, you can essentially seize their bloodline ability."
Tsunade stared at him seriously.
"I doubt you'd ignore that guy's immortal body."
She knew this disciple well.
After witnessing Hidan's strange immortality,
there was no way Ren would simply overlook it.
"I did try earlier."
Ren didn't hide anything.
"I absorbed some of his blood to see if I could obtain that kind of immortality…"
He shrugged.
"Unfortunately, it failed."
Yet there was no disappointment in his expression.
Because he suspected Hidan's immortality wasn't just a matter of the body—
but also the soul.
He could be injured, bleed, and feel pain.
Even if vital organs were pierced or his body was cut into pieces,
no matter how much blood he lost or how much agony he endured,
he simply wouldn't die.
After all, in the original timeline,
Shikamaru had blown him into pieces with explosives—
yet he still didn't truly die.
Clearly some forbidden technique from the Jashin Cult had completely bound his soul to his body.
As for whether the source of that immortality really had something to do with the so-called "Jashin,"
that wasn't a mystery Ren could solve yet.
"You could perfectly merge the Uchiha clan's bloodline limit…"
Tsunade raised an eyebrow.
"So it probably isn't a bloodline ability at all."
"That's what I think too."
Ren nodded.
He raised his right hand.
Wood began sprouting continuously.
Within moments,
several wood clones appeared.
Ren pointed at the sealing techniques.
"These are yours to study."
"Got it!"
Under Tsunade's speechless gaze,
Ren casually handed the task of studying the sealing techniques to his wood clones.
Then he took out another scroll and gestured toward Tsunade.
"Tsunade-nee, this one should be familiar to you, right?"
"Hm?"
Tsunade accepted the scroll with curiosity.
After opening it, her pupils shrank.
"Flying Thunder God Technique? I didn't expect Danzō to give you this too…"
Of course she recognized the technique.
It was a space–time ninjutsu created by her granduncle, the Second Hokage, Senju Tobirama.
With it, he defeated Uchiha Izuna, the younger brother of Uchiha Madara.
It had been hailed as the fastest technique in the ninja world.
Later, the Fourth Hokage, Namikaze Minato, further improved the Flying Thunder God Technique.
During the Third Great Ninja War,
he used it to incredible effect.
He became the new fastest ninja in the world,
earning the title "Yellow Flash."
Tsunade, Orochimaru, Jiraiya—
even the Third Hokage and other high-ranking ninja—
had once tried to learn the technique.
But this S-rank forbidden space–time ninjutsu required extremely rare talent.
To this day,
only the Second Hokage and the Fourth Hokage had truly mastered it.
"If it's you, you might actually learn it."
Tsunade looked at Ren and smiled.
She had complete confidence in her disciple's talent.
"So how long do you think it'll take me to master the first stage of Flying Thunder God?"
Ren asked with a grin.
He believed he truly had talent in space–time techniques.
After all,
his Mangekyō Sharingan ability—Ōanamuchi—
was essentially a form of space–time ninjutsu.
"Ordinary techniques, you learn instantly…"
Tsunade thought for a moment.
"But Flying Thunder God is an S-rank space–time ninjutsu. Its difficulty is far beyond something like the Summoning Technique."
She continued,
"Even the Fourth Hokage, a genius of his level, needed a full month to barely grasp the first stage. I'd say you'd need at least one or two days."
"One or two days?"
Ren smiled.
"How about we make a bet?"
"What do you want to bet?"
Tsunade rolled her eyes but looked at him with amusement.
"There's still plenty of time tonight."
Ren's lips curved upward.
"If I can master the first stage of Flying Thunder God within three hours, Tsunade-nee has to be my pillow tonight."
"Of course, if I fail, I'll give you five million ryō so you can enjoy yourself at the casino."
Originally he wanted to say two hours.
But just to be safe,
he extended it to three.
"Three hours?"
Tsunade's eyelids twitched.
Seeing Ren's confidence, she felt tempted.
Five million ryō…
That was more than enough for a satisfying gambling spree.
"You're way too arrogant, kid…"
Although she had complete faith in Ren's talent and didn't doubt he could learn Flying Thunder God eventually,
she still couldn't believe he could do it that fast.
After all,
the Fourth Hokage's talent was universally acknowledged.
Even Orochimaru couldn't compare to him.
Even if Minato wasn't as monstrous as Ren,
the gap couldn't be that ridiculous.
"Fine. It's a bet."
After thinking it over, Tsunade decisively agreed.
After all, this little brat had already taken advantage of her before.
And he was still just a ten-year-old kid.
She didn't feel much pressure.
This time,
she was convinced she would win.
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