Inside the room.
Yun Xiao was lying back in his chair, reading a manga he had spent a hefty sum to purchase from the system.
"Help! Help!"
Just then, Yun Xiao suddenly heard a desperate cry for help coming from outside.
He closed the manga and curiously asked, "What's going on out there?"
He intended to go to the door to take a look, but after only taking two steps forward, he saw a short man quickly rush inside.
Yun Xiao curiously sized up the newcomer and noticed he was a balding man with sunglasses.
For some reason, Yun Xiao felt this man looked familiar, as if he had seen him somewhere before, though he couldn't recall exactly where.
The man who rushed in was none other than Kado. While being chased by bandits, he had stumbled upon Yun Xiao's shop by chance.
He thought, Anyone bold enough to run a shop in a vplace like this surely isn't an ordinary person.
So Kado rushed in, hoping to seek help from whoever was inside.
Seeing Yun Xiao, Kado anxiously pleaded, "Please, save me! I'm willing to give you all my money!"
Yun Xiao's eyes lit up when he heard that. Testing him, he asked, "How much money do you have?"
Seeing Yun Xiao's reaction, Kado instantly knew that the matter was as good as settled.
Indeed, anyone capable of running a shop in a place like this had to be very powerful.
Kado quickly said, "All my assets are worth ten billion! As long as you save me, all of it will be yours!"
The moment Yun Xiao heard that number, a smile immediately spread across his face.
Because Kado was short, Yun Xiao bent down slightly, smiling as he asked, "Excuse me, excuse me… what is it that you need?"
Kado was momentarily stunned, thinking Yun Xiao was asking how to deal with the bandits. So he quickly replied, "Just kill them all!"
Hearing this, Yun Xiao shook his head and explained, "That's not what I meant. In my shop, I have everything you could ever need. You can purchase goods that will greatly increase your power and influence."
Kado's eyes lit up with anticipation. "Boss, are you serious?"
"Of course. Whatever you need, just say the word. As long as the money is in place, I can provide it," Yun Xiao assured him.
Kado grew excited at once. "Boss, I want to make my body incredibly strong—strong enough to wipe out those bandits with ease!"
Only then did Yun Xiao realize—so that was it, he was being chased by bandits.
Yun Xiao nodded to himself. Since the man had ten billion to his name, it was only fitting to recommend the most expensive product.
"So, you want something that directly enhances your physical constitution?" Yun Xiao asked.
"Yes, exactly!" Kado's voice trembled with excitement.
Yun Xiao gave a slight nod, already knowing what he should sell him.
He turned around and retrieved a metallic test tube from the counter behind him.
The test tube was entirely silver-white, except for a transparent middle section, through which one could clearly see the glowing blue liquid stored inside.
Kado stared at the test tube in Yun Xiao's hand, puzzled. Could something so small really enhance my physical abilities?
Sensing the doubt in Kado's eyes, Yun Xiao chuckled and explained, "This is Super Soldier Serum. Once injected, it can greatly enhance your physical capabilities."
Kado's eyes widened in shock, unable to believe what he had just heard.
This seemingly ordinary test tube actually contained such miraculous power?
He had been skeptical about Yun Xiao's words earlier, but now he was completely shaken.
He couldn't take his eyes off the test tube, his gaze filled with eager anticipation.
At this point, he could hardly wait to try the serum for himself, just to see if it was as powerful as Yun Xiao claimed.
But Yun Xiao didn't hand it over immediately. Instead, he smiled and said, "Relax. First, give me the money. That will be nine billion, nine hundred ninety-nine million taels."
Kado's eyes nearly popped out of his head. He hadn't expected the price to be that astronomical. But then he thought of how much stronger he would become—and how easily he could kill those bandits afterward.
So he agreed right away, pulling a bank card from his pocket and handing it to Yun Xiao.
(We're not sure if the Naruto world actually has bank cards, so let's just assume he has one…)
Yun Xiao happily accepted the card, swiped it casually, and then handed it back to Kado.
Kado frowned in confusion and explained, "Boss, you need to take the card to the bank to withdraw the money…"
But Yun Xiao smiled calmly. "Don't worry, I've already withdrawn the funds."
Through the system, Yun Xiao had instantly extracted the money from the bank card.
Kado's eyes went wide in disbelief. He had never imagined this shopkeeper possessed such mysterious abilities!
Carefully holding the test tube containing the blue liquid, Yun Xiao smiled as he handed it over.
"Hold on, I'll fetch a syringe for you," he said before turning around.
Kado gripped the test tube tightly, staring at the glowing liquid inside with barely concealed excitement.
Although he didn't yet know how much it would enhance his physical body, considering the staggering price, he was convinced its effects would not disappoint.
Soon, Yun Xiao returned with a syringe in hand.
Skillfully, he inserted the needle into the test tube and drew out the Super Soldier Serum.
"This serum has one side effect—it will subtly influence the user, making them more upright and just in nature," Yun Xiao explained.
Kado didn't mind. A serum this powerful having a side effect was only natural.
Such a minor drawback was worth accepting.
After all, to gain strength, one must always be prepared to pay a price.
"Boss, I understand. Just inject it!" Kado urged.
Without hesitation, Yun Xiao inserted the needle into Kado's arm and slowly pushed the serum into his bloodstream.
As the serum entered his body, Kado felt a surge of immense power flooding through him. His eyes widened in shock.
Yun Xiao pulled out the needle and quietly stepped back, watching closely to observe the transformation.
"Arghhh!" Kado howled in agony, unable to endure the searing pain tearing through his body. He collapsed to the floor, rolling and writhing.
Rip! A sharp tearing sound echoed as his rapidly swelling muscles shredded his clothes to tatters.
Even more shocking—Kado, originally just about 1.5 meters tall, suddenly shot up by nearly 40 centimeters, reaching around 1.9 meters.
The excruciating pain gradually faded, and at last, Kado rose slowly to his feet.
Now standing tall at 1.9 meters, his body was a fortress of steel-like muscle, radiating overwhelming power.
Kado looked down at his transformed body in awe, an indescribable joy welling up inside him.
He could clearly feel it—an endless well of strength coursed through his veins, a force so potent it felt as though he could shatter the world.
Clenching his fists tightly, he marveled at the raw energy gathering in his grasp. He knew beyond doubt that he had become unimaginably strong. The sensation thrilled him to no end.
Even Yun Xiao was taken aback by the transformation. "As expected of Captain America's Super Soldier Serum… its effects are truly extraordinary!"
It seemed the ninja world was about to witness the rise of a new captain—from the island nation.
"Thank you, Boss!" Kado said gratefully.
If it hadn't been for Yun Xiao, he would probably still be on the run—and eventually cut down by the bandits.
Just then, noise erupted from outside.
"He must be hiding in there! Let's search the place!"
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