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

"Take the kidneys and liver! (Rasengan)"

Buzz buzz~!

"Shōri! (Chidori)"

Chirp chirp chirp~!

"Boom!"

Uchiha Gin, who was squatting by the river fishing, looked at the two little guys not far away who were inexplicably arguing with the dummy.
"There must be something special about this mannequin."

Excluding the possibility that the two were simply having a craving for violence, the only plausible explanation is that seemingly ordinary mannequin.
"Take their kidneys and liver!!!"

After unleashing countless Rasengans, the physically and mentally exhausted Nawaki didn't stop to rest. Instead, gripping his trembling wrist, he roared once more and condensed a chakra ball.
Whoosh whoosh!
Unlike before, this Rasengan emitted a deep blue light, its appearance was much more understated, and the sound it made when spinning was not as exaggerated as before.
"Sidoli!"

Chirp chirp chirp—!
At the same time, a piercing bird cry rang out, as sharp as an eagle's call, its soaring momentum a hundred times stronger than the previous tender chirping.
Fugaku wielded a tangible, violent plasma, his right arm torn and bleeding from the shockwaves, yet his face showed no sign of pain; his crimson eyes held only the joy of success.
"Oh?"

Hearing the familiar spinning sound and birdsong, Uchiha Gin raised an eyebrow in surprise. In the instant he turned to look, the fishing float, which had been perfectly still on the water's surface, suddenly sank downwards.
"A plant!"

He fished for three whole hours and only got this one bite without catching anything. Frustrated, Uchiha Gin decisively gave up on the idea of ​​becoming a professional fisherman.
"Crack!"

After breaking the fishing rod he had made using the Wood Release technique, he turned his attention to the two little guys who were beating up the dummy.
"I succeeded!"

"I succeeded!"

The two little ones shouted excitedly, and at the same time, in perfect unison, they slammed the A-rank ninjutsu they had just mastered into the dummy, which was already displaying maximum taunting power.
"Boom!"

The deafening explosion arrived as expected, but their attacks still couldn't inflict any damage on the seemingly indestructible dummy.
"Haha. Hahaha!"

Nawaki and Fugaku, who had been thrown back, lay sprawled on the ground. Looking at their battered hands, they exchanged a smile, their childish laughter echoing throughout the Naka River.

Almost simultaneously, Uchiha Gin, who had just stood up, froze in place, a faint, inexplicable look flashing in his eyes.

"Training dummy experience points +2".

A strange system notification sounded in his mind.
Suppressing his doubts, he flashed to the training dummy.

The items produced by this system truly live up to their description; after enduring so many uses of Rasengan and Chidori, they still maintain a pristine condition.
Not a single scratch, not even a speck of dust remained.
After silently clicking the search button, Uchiha Gin raised an eyebrow in surprise.
[Training Dummy: An indestructible target; using it for training will yield unexpected and amazing results. (Upgrade Progress: 2/99999)]

It actually works!
Isn't this experience point requirement a bit too much?

Gin Uchiha stroked his chin thoughtfully, then turned his gaze to Nawaki and Fugaku, who were grinning foolishly. Recalling how the two had just successfully used the Rasengan and Chidori, a bold guess immediately formed in his mind.

To confirm his suspicions, Uchiha Gin turned around and stood before the two exhausted children.
Upon seeing the prison guards who had come to offer their condolences, Rope Tree immediately forced himself to sit up and said excitedly,

"Grandpa Gintoki! I won! I've learned the Rasengan!"

"I learned Chidori first!"

Fugaku, standing to the side, was displeased; the two of them were still in the middle of a match!
"I didn't start the timer, so let's call it a tie."

Gin Uchiha didn't waste time on childish squabbles and decided to settle the score openly and fairly.
"Ah!?"*2
Upon hearing this, the two girls' faces fell, but the joy of successfully cultivating outweighed everything else, so they didn't dwell on it any longer, and their silly smiles grew even brighter.
"This dummy is pretty effective, isn't it?"

Seeing the two immersed in joy, Uchiha Gin, unaware of the dummy's effects, casually asked,
"This dummy isn't just good, it's absolutely fantastic!"

When it comes to mannequins, Nawaki and Fugaku get really excited, praising them endlessly.
"If it weren't for it, I wouldn't have been able to grasp the Rasengan compression technique so quickly."

“That’s right. Without its help, I wouldn’t be able to master the power of Chidori.”

"Please elaborate on the process so I can make improvements."

Uchiha Gin narrowed his eyes upon hearing this, and pulled a small notebook from his backpack, pretending to be recording user experience data.

"Uh, Grandpa Yin, why don't you try it yourself and see?"

Rope Tree blinked in confusion.
"Ahem, I only make this stuff and don't use it. Using it too much will affect my objective judgment."

After clearing his throat twice, Uchiha Gin explained earnestly,
"Oh~ I see."

Fugaku and Nawaki immediately looked enlightened, their eyes filled with even more admiration as they looked at Uchiha Gin.

After briefly organizing his thoughts, Rope Tree stroked his chin thoughtfully.
"How should I put it? Every time I hit a dummy with the Rasengan, I gain a little more understanding of the Rasengan."

"Me too. Once I've hit a dummy with Chidori, the next time I use it, I'm much more skilled than before."

After listening attentively to their stories, Uchiha Gin silently put down his pen, stuffed the blank notebook back into his backpack, and a look of understanding appeared on his face.
Sure enough, it was pretty much as he guessed.
Training dummies can help users improve their skill proficiency.
Nawaki and Fugaku were already quite proficient in their respective A-rank ninjutsu, but they were still a little short of complete mastery.
This distance, according to normal training methods, might take ten days to half a month, or even longer, since proficiency becomes increasingly difficult to increase as one progresses.

But they were lucky; they encountered training dummies.

According to their descriptions, each successful hit deepened their understanding of ninjutsu, meaning that each hit improved their proficiency by at least a little.
Don't underestimate this point; if they relied on themselves, they might not even improve their proficiency by a single point in a day.
Now, as long as you hit it once, you can increase your score by one point.
This dummy is practically a cheat code for cultivation!
For some reason, the dummy's effects didn't seem to work on him, the owner.

Thinking of this, Uchiha Gin couldn't help but purse his lips, secretly adding another entry to the system's notation.
Other systems are eager to give their hosts cheat codes and girls, but this damn system of his has been messing with him more than once or twice since it first awakened.

"Grandpa Yin, will you come to the assessment tomorrow?"

"You are the soldiers I trained, so I will naturally be there on time."

Looking down at Nawaki, whose eyes were full of expectation, Uchiha Gin nodded with a smile in agreement.

"Um, Uncle."

"What's wrong, Fugaku? Do you have any other questions?"

Gin Uchiha, who was retrieving the dummy, turned his head in confusion to look at Fugaku and the other man, who seemed to be whispering something to each other.

"We've already succeeded in our cultivation, so can you still give us the reward you promised?"

The usually upright and incorruptible Fugaku, however, was now rubbing his hands together obsequiously, asking with a fawning smile,

"award?"

Uchiha Gin blinked, then a look of realization dawned on his face.

He had almost forgotten about the reward.

"Since you've worked so hard in your cultivation, I'll share the reward with you two."

After all, Uchiha Gin wasn't some kind of demon, and the two little ones had provided him with considerable economic value. Appropriate rewards could greatly promote the growth of his "leeks" (a term for inexperienced investors).

"Really!? I want to make this place bigger!"

Upon hearing this, the two men's faces lit up with joy, and they immediately began to unbuckle their belts in front of Uchiha Gin.
"Wait! Pull your pants up!"

"Huh? Didn't we agree on a reward of partial multiplication?"

Fugaku, gripping his belt, frowned.
"Since you two ended in a tie, the multiplied reward will have to be split equally~" Split equally?

This thing can be split equally?
Fugaku and Nawaki exchanged a glance, their faces filled with utter bewilderment.
"That's right, you can choose to multiply the first half or the second half."

Uchiha Gin gave his advice with a serious expression.
"Alas!"

Upon hearing this, both of them immediately felt a tightening in their groins.
What's the big deal about that kind of multiplication?

"Can't it be more evenly distributed? Even just a tiny bit more than that would be fine."

The two tried to bargain, gesturing with their fingers to indicate that adding more or less was a matter of fate.
"Kids these days are so troublesome. Why don't you just pick randomly? Whether you get a spot depends on your luck."

"Uh, whatever! I'll just go with random! I'm sure I'll get a random machine!"

Confident in their good fortune, the two discussed it and decided to gamble their happiness for the rest of their lives.

"Courageous!"

Uchiha Gin couldn't help but give the two a thumbs up; it was truly a thrilling and exhilarating gamble.

"Ready? Transform!"

Since the two were so insistent, it would be unreasonable for Uchiha Gin to keep hesitating, so he immediately shook off the game.
Two beams of green light, brimming with abundant life energy, descended in parabolic arcs and entered the bodies of the two children who had closed their eyes and held their breath.
"Okay, it's over."

After a long while, Uchiha Gin's voice rang out. The two slowly exhaled a breath of stale air, and the first thing they did upon opening their eyes was to quickly pull down their pants to check.

"Sigh~" *2
Disappointment filled their eyes, and they silently tightened their belts, which had inexplicably become a little tight.

The bet was lost.

"I guess I caught my sister's bad luck. I used to always be able to get a free drink when I drank beverages."

Rope Tree pouted, looking indignant, blaming his failure on his sister's terrible luck at gambling.

"Damn it, even risking the name of the Uchiha clan won't help?"

To ensure he could meet the lucky one, Fugaku even swore an oath using his father, who had just passed away, as a witness.

But it doesn't seem to be working very well; my own father isn't putting in much effort in this sacred place.
Izuna: When Dad comes back, you'll get some good juice!
"You haven't come away empty-handed."

Just as the two turned away in disappointment, Uchiha Gin's voice rang out again.

"Uh? Grandpa Yin, what do you mean?"

In their view, not getting a random number means losing.
“Look behind you.”

Following Uchiha Gin's instructions, the two turned their heads in confusion, their small eyes widening into round bells.

"This"

“Actually, this route isn’t bad either. I happen to know an expert in this field, and I can introduce you to him sometime.”

That night,

Outside the Senju House,

After mentally preparing himself for a long time, Rope Tree finally mustered up his courage, tightened his belt, and pushed open the door.

"I'm back."

Tsunade, who was sitting on the sofa engrossed in a women's beauty magazine studying how to enhance her charm, heard Nawaki's tired voice and immediately turned around, puffing out her cheeks, ready to give her younger brother a good scolding for not coming home on time after get off work.
"Shengshu! You brat, you actually know how to come back? Do you know how worried your grandma and I are?"

Before she could finish speaking, she saw her younger brother turn around to change his shoes, revealing his prominently large buttocks. She immediately fell silent, like a duck being choked.

"Ahhhhh."

After a brief silence, Tsunade's scream pierced the air, nearly ripping the roof off the house.
"Ahhhhh."

At the same time, the same scream echoed through Uchiha Roshi's mansion.
Standing in the entryway, Mikoto covered her mouth in astonishment, finding it hard to believe that the scream she had just heard came from her small, innocent mouth.

"Young Master Fugaku, did you get stung on the butt by a wasp?"

Mikoto's little mind raced, practically steaming, and her eyes darted around before she finally came up with the most realistic possibility.
Her finger grew bigger after she was stung by a bee last time, and it must be the same for young master Fugaku!
Upon hearing the question, Fugaku silently changed into slippers, turned around, and replied in a very serious tone,
"This is a reward."

award?

Mikoto tilted her head in confusion, her gaze lingering on Fugaku's backside, trying to find any trace of a reward.

"Mikoto, what happened? Why are you shouting so loudly?"

Uchiha Roza rushed over upon hearing the commotion, and nearly choked to death upon seeing the enormous buttocks trailing behind Fugaku.

"Young Master Fugaku, hurry and come to the hospital with me!"

"No need, Grandpa Yin said it will recover overnight."

Fugaku gently shook his head.
If it weren't for Uchiha Gin saying that this would reduce the swelling in his buttocks, he would have been prepared to drown in the Naka River tonight.
"Did Gintoki make your butt bigger?"

Realizing the ambiguity in his words, Uchiha Roza quickly corrected himself.
"Yes, this is my reward after successfully mastering an A-rank ninjutsu."

Turning his head to glance at the exaggeratedly large buttocks behind him, Fugaku's face remained expressionless, his eyes revealing a world-weariness beyond his years.

It's clear he has accepted the reality of becoming Konoha's giant butt.
"If breathing can recover, that's fine; otherwise, the only option is to cut it off."

Upon hearing that he could recover, Uchiha Roza immediately breathed a sigh of relief.
If people saw the next Uchiha clan leader dragging around a huge ass like Danzo's, they'd rather the Uchiha clan be wiped out.
"Ah! Young Master Fugaku, you've succeeded in your training! That's amazing!"

"Wait! You successfully mastered it? That Lightning Release ninjutsu?"

Uchiha Lucha belatedly widened his eyes, his face filled with disbelief.
He had seen Chidori before and knew how difficult it was to master. For Fugaku to master such a powerful ninjutsu at such a young age, he was an absolute genius, one in a million, and there was no one else like him in the entire Hidden Leaf Village.

Fugaku did not answer, but simply nodded slightly.

"What about Nawaki-kun? Has he mastered it?"

Little Mikoto, standing to the side, blinked her eyes rapidly and asked expectantly,

"That idiot."

Upon hearing Mikoto mention Nawaki, Fugaku couldn't help but purse his lips, but he still honestly stated the result.
He mastered it too, but a tiny bit later than me.

"Oh! Does that mean he won't have a big butt?"

"But then again, competition comes second, and we share the hardships; how can I reap the rewards of victory all by myself?" (End of Chapter)