Konoha: The thirty-year-old Uchiha is not motivated.

"And then Cuihua beat you into this pig-headed state?"

Sitting on his designated recliner in the training ground, Uchiha Gin listened to the children recount the entire incident, one after another. He slowly straightened up, pushed his black sunglasses up to his forehead, and stared at Minato, who was now unrecognizable, with a strange expression.

"I had no chakra left at that time."

Minato, holding a glass of chilled lemonade to his face to reduce swelling, nodded. With each word he spoke, the bruised corner of his mouth ached painfully.
"Cuihua, Shuimen is a handsome boy next door who makes a living with his looks. Aren't you being a bit too ruthless?"

Shaking his head with a hint of sympathy, Uchiha Gin shifted his gaze to Kushina, who stood beside Minato with her arms crossed, looking like she'd had a great time.

"Who told him to pretend like that? He clearly had no energy left."

Kushina pouted when her embarrassing nickname was revealed, and muttered under her breath,
"It's alright, Grandpa Yin, this little injury is nothing to worry about."

Seeing the red-haired girl looking so wronged, Minato shook his head and stepped forward. To Kushina's surprise, he took the initiative to forgive her for beating him up like a pig's head.

"Uh"

Uchiha Gin scratched his head speechlessly. This kid really went all out to pick up girls. He's already at this age where he doesn't fight back or talk back when insulted. You can imagine what his family life will be like after marriage.

"Okay, so you said you saw a 'door', right?"

Since both parties were willing to give and receive, Uchiha Gin didn't interfere in their private lives and then inquired about the "gate" that Minato had described.

"Um, Grandpa Yin, what exactly is that thing?"

Although during previous combat training, Minato stepped through that door at the last second and successfully broke through the spatial barrier, teleporting to Kushina's side,
But unfortunately, his little brain was still too immature, and even after racking his brains, he couldn't understand the mystery.

How am I supposed to explain this to you?

Uchiha Gin stroked his chin, his face full of thought.

Minato likely awakened his spacetime talent prematurely, a talent he should have acquired as an adult. The "gate" he described was actually an extremely abstract concept.

For example, when he first used the Flying Thunder God Technique after collecting all the fragments, this amazing space-time ninjutsu, he also saw a huge, comical dog head in the space-time turbulence.

It is a manifestation of a personal, spatial-temporal power that cannot be explained by conventional theories.

"Perhaps you were homesick at the time?"

"what?"

Seeing Minato's bewildered expression, Uchiha Gin chuckled and continued,

"In short, you have awakened an extremely rare talent."

"talent?"

Hearing this, the surrounding children all showed curious expressions. Fugaku looked his little brother, who had a pig-like head, up and down, his doubts only increasing. He then directly asked Uchiha Gin the question that everyone was eager to know the answer to.

"Uncle, what talent did Shui Men awaken in prison?"

"Space-Time".

"what?"

Upon hearing this, Rope Tree, who had been listening intently, looked startled and quickly asked to confirm.
"Is it like my aunt's space-time ability, where she can move around freely?"

“That’s right. Based on my years of experience in judging people, Minato’s talent is no less than that white-haired guy’s.”

Gin Uchiha would bet that, in terms of the application and development of the Flying Thunder God Technique, Minato was far superior to that white-haired guy who only knew how to tinker with restoring his groin.

"Really? Does that mean Minato's underlings are going to take off?"

Upon hearing this, Rope Tree's eyes widened, and his envy was clearly visible.

"Idiot, space-time ninjutsu isn't something you can learn so easily!"

Fugaku, standing to the side, couldn't help but roll his eyes at the boisterous Nawaki. His words caused Minato's eyes, which had just lit up, to gradually dim.
That's right, that's an extremely rare space-time technique. How could he, the son of a commoner ninja, possibly be qualified to learn it?
Nawaki noticed something amiss in Minato's disappointed expression, and immediately patted his chest, guaranteeing with absolute certainty,
“Young Master Minato, I’ll go home right now and ask my aunt to teach you the Flying Thunder God Technique.”

Looking at the righteous Nawaki, Fugaku wore a look of shame.

"Rope Tree, I misjudged you before. I never expected you to be such a sentimental person."

"Of course, that's on the condition that you become my underling in the future."

"."

"Mikoto, don't hold me back! I'm not a Uchiha if I don't electrocute this idiot until he's seven-tenths cooked!"

"Minato-kun, don't worry. The village must have some space-time ninjutsu recorded. Once you become a qualified ninja, you'll definitely be able to acquire the ninjutsu that suits you through your own efforts."

While Shikaku couldn't offer any real help, he could provide Minato with a practical and feasible idea.

He had heard from his father that there was a secret manual in the village called the Book of Sealing.

Edited by the First Hokage, with materials provided by the First Secretary, it records all sorts of forbidden techniques, including space-time ninjutsu.

"Thank you, Shikaku."

After Shikaku's reminder, Minato, who had been somewhat dejected, was instantly filled with fighting spirit again.

He hasn't even graduated from the Ninja Academy yet. His priority should be laying a solid foundation. Rashly attempting to learn advanced space-time ninjutsu could easily lead to disaster.

Kushina, standing silently beside Minato, bit her lip, her eyes filled with complex emotions as she secretly observed the blond boy.

Although this blond kid is a bit pretentious, he's actually not a bad person. It would be a shame if he truly possessed a rare talent but didn't develop it.
However, she only had a superficial understanding of space-time ninjutsu. If there were someone knowledgeable and well-informed...
Uh?
As she was thinking this, Kushina's gaze unconsciously shifted to Uchiha Gin, who was lying on a chair basking in the sun.
"Grandpa Yin, you must have a way, right?"

Upon hearing this, the previously noisy group instantly fell silent, and Mikoto, who was holding onto Fugaku, nodded in realization.

"That's right, doesn't Grandpa Gin know a lot of ninjutsu?"

"Sigh, as expected, a man as outstanding as me is as eye-catching as a firefly in the dark."

Feeling the gazes of countless young eyes fixed on him, Uchiha Gin sighed, straightened up, and removed his sunglasses, his lifeless eyes filled with a sense of melancholy.
"Grandpa, I actually have another identity."

"Ok?"

Seeing Uchiha Gin's feigned seriousness, the children all showed curiosity in unison.
"You know the Book of Seals, right? That book was actually commissioned by Hashirama from the prison and I was the chief editor, but I, your grandfather, am indifferent to fame and fortune, so I didn't sign my name on it."

As Uchiha Gin spoke, his face was filled with longing for his past glories.
"That was space-time ninjutsu?"

"Of course I understand."

Gin Uchiha nodded slightly to the anxious Minato, reverting to his usual lazy demeanor, and asked while yawning,

"Ha~ What, you want to learn?"

With the opportunity to learn space-time ninjutsu within reach, Minato, who had just been reassuring himself to build a solid foundation, wavered. After a moment's hesitation, he nodded slightly.

"Please teach me, Grandpa Silver."

Instead of nodding, Uchiha Gin asked a question that was beyond his comprehension.

"Do you know how much you have to pay to obtain an A-rank ninjutsu from the Book of Sealing?"

"No, I don't know."

"It's a relatively peaceful time now, and you'll probably need to carry out ten shady S-class missions for the village."

"what?"

Seeing the shocked faces of the children, Uchiha Gin did not reveal the other method of exchange.

[Killed ten enemy ninja during the war]

Glug!
"You need 10 S-rank missions to exchange for one A-rank ninjutsu?"

Rope Tree asked, somewhat incredulously,
Keep in mind that acquiring an A-rank ninjutsu from another ninja wouldn't cost the equivalent of ten S-rank mission rewards.

"To correct you, it's an A-rank forbidden technique, not a low-quality A-rank ninjutsu like the Great Waterfall Technique." Every forbidden technique recorded in the Scroll of Seals is extremely dangerous; if not mastered properly, it can harm both the user and others.
"Which bastard set such a high price? Aren't they afraid the little bird will rot?"

With a disgruntled pout, Rope Tree muttered to himself,

"You can go home and ask your aunt; she might know who did it. Remember to use her exact words!"

Uchiha Gin nodded with a strange expression, incidentally pointing Nawaki down a dead end.
"Yes, I'll ask about it when I get back."

My child, I hope to see you lively and energetic again tomorrow.

"This is only A-rank. If I remember correctly, the space-time ninjutsu recorded in the Book of Sealing is S-rank."

"Huh? S-rank? Doesn't that mean the price will double?"

"No, it's just that a zero was added at the end."

"what?"

The children, who had just breathed a sigh of relief, were instantly dumbfounded.
Add a zero?

"Wouldn't that be 100 S-rank missions?"

Even Fugaku, who always prided himself on his composure, couldn't help but gasp at the exorbitant price.

Upon learning the truth, Minato was utterly devastated. His father was already a highly skilled Jonin, but he had only completed a handful of S-rank missions to date, each one fraught with peril.
"Does that mean I'll never have a chance to get it in this lifetime?"

Although he was confident about the distant future, Minato didn't believe he could surpass his father by much.
"It's not impossible."

Uchiha Gin chuckled and patted Minato's dejected little head. A faint green light emanated from his palm, instantly fading the bruises and swelling on Minato's face.

"Who told Grandpa to be so soft-hearted?"

Pinching Minato's cheek, which had returned to normal, Gin Uchiha shook his head with a sigh.

"Since you think 100 S-rank missions from the Book of Seals are too many, I'll give you a discount, a huge discount."

This can be discounted?
Minato blinked in confusion. Was Grandpa Gin going to try and trick him with cheap stuff?
"If you persist in training with this dummy for one hour every day, I will teach you the training method of an S-rank space-time ninjutsu."

Faced with Minato's skeptical gaze, Uchiha Gin explained his discounted exchange terms in detail.

"So simple?"

"It's that simple."

Uchiha Gin nodded. His dummy's experience points were still a long way from leveling up, so having a fixed and reliable free source of experience points would be ideal.

"Grandpa Yin, you...I..."

Looking at the resolute expression on Uchiha Gin's face, Minato was overwhelmed with emotion, tears welling up in his eyes, ready to spill over at any moment.

Pfft!
After hastily wiping his sore eyes a few times, Minato straightened his face and knelt down directly before Uchiha Gin.

"I, Minato, can never repay your kindness in my lifetime."

"Uh"

I feel a warm sensation on my back, as if the sun is about to rise.

"Words are no proof; let's draw up a written agreement."

Out of meticulous consideration, Uchiha Gin took out his ever-present paper and pen from behind him and wrote a lengthy contract, detailing specific provisions such as that if Minato was absent due to special reasons, he would have to make up for it with double the amount, etc.
"I sign!"

Minato, who had complete confidence in Gin Uchiha, quickly glanced at the densely packed small print and waved his hand, signing his name on the contract.

"The contract is established."

With a beaming smile, Uchiha Gin retracted the contract. His gaze lingered for a second on the four large characters "inheritance of offspring" in the remarks clause, and his smile widened.
Alright, now whether you give birth to Naruto Uzumaki or Menma Namikaze, you'll have to obediently provide me with training dummies!
Actually, Gin Uchiha didn't want to use such despicable methods to fool children, but the dummy's mechanism was just too ridiculous.
Through his years of real-time monitoring, he discovered that when the same person continuously uses a dummy to farm skill proficiency, a certain debuff is triggered, and the difficulty of gaining experience points from the dummy increases exponentially.

After carefully putting away the "contracts of servitude" for Minato and his descendants, Gin Uchiha searched through the library in his backpack for a long time before finally finding a scroll that had been sealed away for many years.

"Whoo~"

He carefully blew away the surface dust, and after confirming that he hadn't taken the wrong one, he casually handed it to the hesitant Minato beside him.

"This is the technique you need, but remember, you can only borrow and learn it here, you cannot copy it or take it away."

This was also for Minato's safety. If someone with ulterior motives found out that a ninja academy student possessed an S-rank forbidden technique, wouldn't they take advantage of him?

"Yes!"

Minato solemnly accepted the scroll, but before he could even examine it, his friends swarmed around him.
"Minato, let us see what kind of ninjutsu this is?"

Driven by intense curiosity, Rope Tree urged repeatedly.
"Hold on."

Minato took a deep breath and slowly turned the scroll in his hand until the name of the ninjutsu marked on the surface was revealed.

The Flying Thunder God Technique: From Beginner to Final Burial

"what?"

Seeing this familiar name, a completely bewildered Nawaki rubbed his dazed eyes hard.

"Hiss! It's actually Second Grandfather's technique!"

"The first Party branch secretary's signature skill?"

Shikaku frowned, his surprise no less than Nawaki's.

"That's right, these are the only two space-time ninjutsu recorded in the Book of Seals."

"Only two, what is the other technique?"

The curiosity of everyone present was instantly piqued. A space-time ninjutsu that could be listed alongside the First Branch Secretary's signature technique in the Book of Seals must have an extraordinary origin.
"This is a village secret. I can only tell you that the other technique and the Flying Thunder God Technique are both from the same person."

It's best to keep children away from such an evil ninjutsu as the Impure World Reincarnation technique at a young age.
If you really want to know, why not just experience it for yourself when you have the chance in the future?
"Hehe~ Isn't my second grandfather amazing?"

With a smug look on his face, Nawaki taunted Fugaku beside him.
"So what if he was powerful? He still died."

Having been influenced by Uchiha Gin Izuna, how could Fugaku possibly have even the slightest respect for his father's former nemesis?

"So Fugaku, you're the kind of Uchiha my aunt described, the one who's born evil!"

"Hehehe~ You only realize it now? You really are a born fool, you thousand-handed brat."

Are kids these days so dramatic?
Turning his gaze away from the two fierce rivals, Uchiha Gin shrugged, reclined back on his throne, and lazily waved to the children present.
"Alright, if there's nothing else, you can go have fun on your own."

The little ones showed no sign of leaving; instead, they stared at him with wide eyes, until Uchiha Gin felt his skin crawl.
"Speak your mind."

The children exchanged glances for a few seconds, each seeing deep envy in the other's eyes. Then, they rubbed their little hands together, their innocent faces displaying an obsequiousness beyond their years.

"Grandpa Yin, actually I want to too."

"I also."

"Grandpa Silver, I've already learned the Kong Lockdown technique, can you teach me another one?"

"Uncle, you can't show favoritism!"

"Me too!"

"."

Uchiha Gin was worried about what to do with these kids after they graduated, since they wouldn't come back to the training ground to practice on the dummies anymore. Now, they've practically delivered themselves to his doorstep.
Feigning helplessness, he took out paper and pen, and a few moments later, several contracts identical to Minato's appeared in his hands.

"Sigh, I really can't do anything with you guys. Everyone gets a copy of this contract. After signing and sealing it, line up here to receive your custom-made secret technique. Kushina, you don't need to sign it; duplicates are useless." (End of Chapter)