Inside the house.

Yunxiao was lying on a chair reading a comic book, which they bought from the system at a high price.

"Help! Help!"

Just then, Yunxiao suddenly heard a cry for help outside the house.

He closed the comic book and asked curiously, "What happened?"

He wanted to go to the door to see what was going on, but he had just taken two steps when he saw a short man running in quickly.

Yunxiao looked at the person curiously and found that it was a Mediterranean man wearing sunglasses.

He felt that the person looked familiar, as if he had seen him somewhere, but Yunxiao couldn't remember where he had seen him.

The man who rushed in was Cardo. He happened to find Yunxiao's shop while being chased by bandits.

He felt that anyone who dared to open a shop in such a place was definitely not a simple person.

So Cardo ran in and wanted to seek help from the people in the house.

After seeing Yunxiao, Cardo said anxiously: "Please, save me! I am willing to give you all my money!"

When Yunxiao heard Cardo's words, his eyes lit up and he asked tentatively: "How much money do you have?"

After seeing Yunxiao's reaction, Cardo knew that this matter was settled.

Sure enough, the strength of a store in such a place must be extraordinary.

Cardo hurriedly said: "All my property is a total of 1 billion! As long as you save me, all this money is yours!"

After hearing this number, Yunxiao smiled immediately.

Since Cardo was short, Yunxiao bowed and smiled and said, "Excuse me, do you have any needs?"

Cardo was stunned. He thought Yunxiao asked him how to deal with those bandits, so he said, "Just kill them all."

Hearing Cardo's words, Yunxiao explained, "It's like this. I have everything in my store. You can buy goods to enhance your financial strength."

Hearing this, Cardo expectedly said, "Boss, are you serious?"

"Of course, tell me your needs. As long as the money is in place, I can meet them." Yunxiao promised.

Cardo was immediately excited, "Boss, I want to make my physical fitness very strong so that I can easily get rid of those bandits!"

Yunxiao realized that he was being chased by bandits.

Yunxiao nodded. He thought that since the other party had a deposit of 1 billion, he must recommend the most expensive one to the other party.

"Yes, is it something that can directly enhance physical fitness after use?" Yunxiao asked.

"Yes, this kind!" Cardo's voice trembled with excitement.

Yunxiao nodded slightly. He already knew what he was going to sell to Cardo.

Then he turned around and took out a metal test tube from the counter behind him.

The test tube was silver-white, with only the middle part transparent. You could clearly see a tube of blue liquid stored inside.

Cardo looked at the test tube in Yunxiao's hand curiously, wondering in his heart, could such a small test tube really enhance his physical fitness?

As if sensing the doubts in Cardo's eyes, Yunxiao chuckled and took the initiative to explain: "This is the super soldier serum, which can greatly improve physical fitness after injection."

Hearing this, Cardo's eyes widened in shock. He couldn't believe what he heard.

This seemingly ordinary test tube in front of him actually has such a magical effect?

He originally had a little doubt about Yunxiao's words, but at this moment he was completely shocked.

He stared at the test tube in Yunxiao's hand, his eyes full of expectation.

At this moment, he couldn't wait to try this magical serum to see if it was as powerful as Yunxiao said.

Yunxiao was not in a hurry to give it to him, but smiled and said: "Don't worry, give me the money first, a total of 999,990,000 taels."

Cardo's eyes widened in shock. He didn't expect it to be so expensive, but when he thought about being able to improve his strength and then kill those bandits.

He immediately agreed, so he took out a bank card from his arms and handed it to Yunxiao.

(We don't know if Naruto has a bank card, if not, just assume it has one...)

Yunxiao happily took the bank card, swiped it on the bank card, and returned the card to Cardo.

Cardo was confused when he saw this, and explained: "Boss, you have to take the card to the bank to withdraw it yourself..."

Yunxiao smiled and said: "It doesn't matter, I have already taken the money in the card."

Yunxiao naturally took out the money from the bank card through the system.

Cardo's eyes widened in disbelief. He didn't expect that this boss would have such mysterious means!

Yunxia carefully handed the test tube containing blue liquid to Cardo and said with a smile:

"Wait a moment, I will go get you a syringe now."

After that,He turned and left.

Cardo held the test tube tightly in his hand, staring at the blue liquid in it, with an uncontrollable excitement on his face.

Although he didn't know how much this serum could improve his physical fitness, he knew that it was expensive, so he believed that its effect would not disappoint Cardo.

At this moment, Yunxiao had come back with a syringe in his hand.

He inserted the syringe into the test tube skillfully and extracted the super serum.

"Don't worry, this serum has been carefully optimized and will not have any side effects."

Yunxiao comforted softly, and at the same time, he inserted the syringe into Cardo's arm without hesitation, slowly pushed the syringe, and injected the serum into his body.

As the serum was injected, Cardo felt a powerful force gradually spreading in his body, and he couldn't help but widen his eyes.

Yunxiao pulled out the syringe, silently stepped aside, and observed Cardo's changes.

"Ahhh!" The severe pain from his body made Cardo unbearable, and he roared and rolled on the ground.

"Rip!" Suddenly, a sharp tearing sound was heard, and Cardo's muscles bulged rapidly, tearing his suit.

What was even more shocking was that Cardo was only about 1.5 meters tall, but at this moment he miraculously grew nearly 40 centimeters taller, reaching about 1.9 meters.

The severe pain gradually disappeared, and Cardo finally got up slowly from the ground.

At this time, Cardo's height had grown to 1.9 meters, and his muscles were knotted together like steel, full of unparalleled power.

Cardo stared at the amazing changes in his body, and an indescribable joy surged in his heart.

He could clearly feel the endless power in his body, as if it could destroy everything.

He tried to clench his fists and felt the power gathering at his fingertips. He knew that he had become extremely powerful, and this feeling made him excited.

Cardo's change made Yunxiao a little surprised, "It's really worthy of Captain America's super soldier serum, the effect is different!"

It seems that there will be an island captain in the ninja world...

"Thank you, boss!" Cardo said gratefully.

If it weren't for Yunxiao, he would still be running for his life, and then eventually killed by the bandits.

Just then, there was a noise outside the house.

"He must be hiding inside, let's go in and search!"