Shop System, Mobile RPG?

He chuckled with a sly grin.

"Father-in-law... Lord Hiashi, I shall take my leave now!"

Amidst Hinata's reluctant gaze, Uchiha Sora departed, walking back toward the Uchiha clan compound under the glow of the setting sun.

Compared to the prosperity of the Hyuga clan, the Uchiha clan had declined to the point where only he and his brother, Sasuke, remained in the vast courtyard.

At that moment, Sasuke was already waiting at the front door.

Seeing Uchiha Sora, he exclaimed with delight, "Big brother! Your predictions were spot on. The answers to those test papers were exactly the same as the ones on the exam!"

Uchiha Sora smiled and tapped Sasuke on the head. "Of course they were. Get to bed early tonight; tomorrow's exam will be even tougher."

He then added a word of caution, "Remember, keep a close watch on the ninjas from the Land of Rain tomorrow! They are not to be underestimated."

Sasuke nodded blankly. He knew by now that his brother possessed great foresight, and listening to him was never a mistake.

Having dismissed everyone, Uchiha Sora finally returned to his own room.

He closed his eyes and began to claim his system rewards.

Ding! Congratulations to the host for completing the mission perfectly and earning the praise of Ibiki. The system will issue bonus rewards!

Reward 1: System Shop unlocked. The host may browse and purchase items at their discretion!

Reward 2: 5,000 gold coins. Gold coins can be earned by completing missions or dismantling items, and can be used to purchase goods in the shop.

Additionally, gold coins can be used to reinforce equipment; the amount consumed depends on the strength of the gear!

Reward 3: Technology level increased by one tier!

The host may inspect this at their discretion!

Reward 4: Bonus reward. Since the host used Morse code to cheat, the system rewards you with Cipher Ninjutsu!

Through this ninjutsu, you can create codes using various sounds and details, and also transmit messages secretly!

Looking at the string of rewards, Uchiha Sora was momentarily dazzled.

However, he quickly regained his composure and began to study them one by one.

"First, the tangible rewards. Gold coins go without saying; I can buy items later. I'll check the shop in a moment."

"The important thing is the ninjutsu. This thing can transmit messages secretly? Doesn't that mean if I have to take another test, I won't even need hand signals?"

Uchiha Sora was pleasantly surprised. This ninjutsu might not seem powerful, but if used correctly, it could have miraculous effects.

Afterward, Uchiha Sora opened the system interface in his mind.

He discovered that, in addition to the synthesis tab, the interface now included options for technology and the shop.

He opened the technology tab first.

Upon clicking, he realized that technology essentially represented the current upper limit of his technical capabilities.

It was also the limit of what the system could synthesize.

Currently, the system could synthesize gunpowder, firearms, and some simple vehicles.

Beyond that, there were many other inventions of the same tier.

However, things like starships or atomic bombs were temporarily unavailable.

Even with the materials, they remained locked and required unlocking.

This was easy to understand; after all, who could build an atomic bomb from scratch right out of the gate?

Uchiha Sora didn't dwell on it and instead clicked on the shop.

The moment it opened, Uchiha Sora gasped.

The shop was filled with a dazzling array of supplies.

Most were parts, but that alone was enough to shock him.

"Item 1: Plastic. Description: Solid blocks of plastic that can be melted down and molded into any shape using fire. 10 gold coins per ton!"

"Item 2: Bullet casings. Can be purchased in various sizes according to the required caliber. 10 gold coins per 1,000 units!"

"Item 3: Complete set of chemical laboratory equipment, including beakers, volumetric flasks, hoses... 500 gold coins for the whole set!"

Looking at the vast selection of goods, Uchiha Sora drew a sharp breath.

Plastic blocks went without saying; if he wanted to craft lightweight and sturdy equipment later, he could buy some as raw materials.

Item 2 was simply outrageous!

Bullet casings—did this mean that by combining gunpowder chakra with a casing, he could increase the power of his attacks?

The third item was even better. As technology developed, Uchiha Sora would certainly need to conquer the field of microbiology.

A complete set of chemical equipment was a bargain!

However, these things were currently of no help to Uchiha Sora, or rather, they couldn't be used in the short term.

So, Uchiha Sora continued to move his gaze downward.

Very quickly, he saw a section labeled for ninjas!

Could it be that there are ninjutsu here too?

Uchiha Sora was pleasantly surprised and immediately clicked into it.

He discovered that the contents were, shockingly, a complete collection of ninjutsu.

However, they were different from ordinary ninjutsu.

Everything in here was a form of camouflage; for instance, something might appear to be Wind Style on the surface.

It could fire wind blades, but internally, it was actually condensed gunpowder exploding to form an invisible shockwave.

To put it plainly, most of them were disguised ninjutsu, convenient for hiding his gunpowder chakra.

But there were also genuine ones.

For example, right in front of Uchiha Sora was one called Rifling Compression!

As the name implied, once learned, one could compress gunpowder chakra within an environment similar to rifling.

Furthermore, it required no auxiliary tools; similar to Susanoo, one could create rifling directly with bare hands.

This was absurd! That was rifling, after all! Something specifically designed to enhance the power of artillery shells.

Ordinary shells, after being accelerated by rotation, had greater power and higher precision!

And it only cost 20 gold coins!

To Uchiha Sora, this was pocket change!

Without a second thought, Uchiha Sora chose to purchase it.

"Ding! Congratulations to the host for a successful purchase! Obtained Rifling Compression!"

Subsequently, a new memory appeared in Uchiha Sora's mind—it was, indeed, a ninjutsu.

He decided to give it a try, heading to the backyard and raising his hands, his arms positioned as if he were shouldering an invisible rocket launcher.

His chakra began to compress rapidly, similar to the Nine-Tails' Tailed Beast Bomb!

After compressing the energy to its limit, he sent it along the spiral rifling, accelerating and compressing it within the illusory cannon barrel, then accelerating it once more!

Then, he fired it instantly.

Uchiha Sora only saw a fireball flash before him, striking a rockery in front of him at a terrifying speed!

BOOM!

The entire rockery was razed to the ground, and even the area at the foot of the mountain was blasted into a crater dozens of meters deep!

"Holy crap! This lethality is practically comparable to a missile, alright!"

"And it only consumes a sliver of chakra. Damn it, doesn't that make me a walking RPG?"

Uchiha Sora was pleasantly surprised.

He discovered that the bombs created using gunpowder chakra were even stronger than real black powder.

As Uchiha Sora pondered, he quickly found the answer.

Perhaps it's because real black powder is powdery or solid, so there is always energy dissipation after an explosion.

It's like a bottle filled with stones; there will always be gaps.

But chakra, being a gas, is different. It can fill the entire bottle, which not only saves space but also significantly increases the power!