Railgun

"Money, money, money! Why does everything cost money!" Gu Qi cried out from the bottom of his heart.

Flipping through the system store, Gu Qi saw many things that made his mouth water.

For example, he could directly upgrade his laboratory into a super laboratory fully equipped with permanent power.

He could also renovate and upgrade a certain area, using only a portion of it.

The price for such a laboratory was quite staggering, ranging from ten million to one hundred million Ryo.

This amount of money was simply astronomical to Gu Qi.

Although he now had a stable, long-term profit-sharing from the Secret Recipe Dried Meat, figuring out how to use the money reasonably without being noticed was a troublesome matter.

Furthermore, the Secret Recipe Dried Meat had only been on the market for a few months, and Gu Qi's profit-sharing was currently only a little over five hundred thousand Ryo.

The most basic laboratory set in the store required at least one million Ryo.

"It seems I can only start from the real world," Gu Qi silently closed the store. There were many good things inside, but unfortunately, he couldn't afford them right now.

However, there was a problem with purchasing laboratory equipment from the real world. Ever since Orochimaru's human experiments were discovered, Konoha had been very strict about controlling laboratory equipment.

Apart from Konoha's specialized organizations, other groups and individuals who wanted to purchase equipment had to state their purpose and register.

But Gu Qi didn't want anyone to know his intentions, and coupled with his age, it would probably be quite difficult to purchase this equipment.

"Should I ask Kakashi to help? This is so difficult!" Gu Qi held his head, looking troubled.

"Missing me again?" Kakashi, who appeared out of nowhere, once again appeared by Gu Qi's window.

"Kakashi, I swear I'll leave an Exploding Tag on the window next time," Gu Qi glared at Kakashi hatefully.

Kakashi smiled and patted Gu Qi's head, saying, "Exploding Tags are dangerous things, children shouldn't play with them casually!"

"Hmph!"

"Go on, what do you need me to do this time?" Kakashi asked curiously.

Gu Qi hesitated for a moment, then decided to say, "I want you to buy some laboratory equipment. I want to research some things."

Kakashi's eyes narrowed. "Didn't we already talk about this? You're not allowed to research that until you have absolute strength."

Gu Qi shrugged. "Research isn't something that can be done in a day or two. If I wait until I have enough strength to research, won't it be too late?"

Kakashi pondered for a moment. "What you're saying isn't unreasonable. However, you must promise me that you won't reveal it even if you succeed. Of course, using it privately is fine."

Gu Qi looked at Kakashi in surprise. "You agree?"

Kakashi sighed. "Even if I disagree, you'll find a way to get the equipment. Rather than letting you mess around blindly, it's better for me to keep an eye on you."

"Kakashi, you're the most reliable," Gu Qi said with a grin.

"Tch!"

Gu Qi chuckled. "I'll make a list for you tomorrow. You can help me get the equipment then!"

"Got it."

"Time is still early, let's go out!" Gu Qi looked at the sky and then pulled Kakashi, ready to leave.

"Where are we going? Not to eat yakiniku again, are we?" Kakashi looked at Gu Qi warily.

Gu Qi rolled his eyes. "Look at you being so stingy. Saye and the others are still at the Inuzuka Clan's place. It's time to bring them back."

"That's true, let's go!"

Kakashi nodded and followed Gu Qi out of there.

"Saye, Hachi, Rasu, did you miss me?"

Not long after, the two arrived at the Inuzuka Clan's compound before sunset.

Hana Inuzuka smiled. "Congratulations on being discharged from the hospital, Little Gu Qi. These past few days you were away, these three little guys have been listless!"

"Sister Hana, thank you for taking care of them," Gu Qi said gratefully.

Hana Inuzuka patted Gu Qi's head. "It's just a small matter, Gu Qi-kun, don't be so polite."

"Mhm mhm!"

"Saye, what's wrong?" After petting Rasu and Hachi, Gu Qi noticed Saye looking pitiful and hesitant to approach him.

"This little guy feels guilty. It thinks it didn't rush down to protect you back then, which is why you got hurt," Kuro-maru, who was crawling on the ground, revealed the truth.

Upon hearing this, Gu Qi picked up Saye and nuzzled the little guy. "I should be the one feeling guilty. I was too weak back then and couldn't protect you. From now on, I will definitely protect you and make sure you don't get hurt."

"Woof woof!"

"The little guys said they will train hard from now on and won't hold you back," Kuro-maru translated.

"Thank you all!" Gu Qi embraced the three Ninja Dogs.

"Little Gu Qi will definitely be a very reliable partner in the future. It's truly wonderful that these three little guys are with you," Hana Inuzuka said with a gentle smile.

After bidding farewell to Hana Inuzuka and the leader Kuro-maru, Gu Qi left with the three Ninja Dogs on his back.

"Kakashi, I'm going to train. You go play by yourself!" Gu Qi suddenly said after leaving the Inuzuka Clan's compound.

Kakashi stopped. "So sudden? Aren't you going to rest for a few more days?"

"No," Gu Qi shook his head. "Training is like rowing against the current; if you don't advance, you fall back. I've rested long enough, it's time to train properly."

Seeing Gu Qi's expression, Kakashi didn't object. "Alright, then be careful."

"Don't worry!"

"Get home early, don't train too late."

"Got it!"

Watching Gu Qi leave in a hurry, Kakashi stared for a long time before turning and leaving the street.

When Gu Qi arrived at the forest he hadn't visited in a long time, he let the three little ones train on their own.

Today, Gu Qi planned to begin training to turn the Railgun into a ninjutsu.

Compared to the complicated Air Cannon, Gu Qi felt the Railgun would be simpler to implement.

Moreover, Gu Qi had experience researching the Electromagnetic Shield, so he believed training the Railgun would be more skillful and handy.

The Railgun technology provided by the system could be divided into two types: one was the electromagnetic rail type, and the other was the electromagnetic coil type.

The former's most famous example was the railgun on the US Navy destroyer that appeared in Transformers 2.

As for the latter, famous figures included Misaka Mikoto and Yu Xiaobai.

Compared to the latter, the former was actually simpler to implement.

As long as both arms were electrified and a metal projectile like a kunai was clamped between them, it could be fired.

However, this would completely occupy Gu Qi's hands, rendering him unable to counterattack for a period of time.

The coilgun, on the other hand, could be used with just one hand.

But Gu Qi had to generate a series of electric coils starting from his shoulders to launch the metal projectile in his hand.

This method highly tested Gu Qi's control over Chakra.

This was because the interval between each electric coil was short, and the current intensity had to be uniform for the metal ammunition to be successfully launched.

Judging by the system's usual behavior, Gu Qi guessed that the task would only be considered complete after both firing methods were realized.

Aiming at a large tree, Gu Qi straightened his arms and continuously released Lightning Release Chakra from his shoulders.

What Gu Qi needed was to first let the Lightning Release Chakra flow from his shoulders and then quickly transmit it down his arms to his wrists.

Only in this way would the metal projectile between his arms have enough acceleration to be fired.

Flashes of lightning rapidly transmitted from Gu Qi's arms to his wrists.

After adapting to this rhythm and Chakra amount, Gu Qi stopped the Chakra input.

"Let's try it!" Gu Qi took out a one-yuan coin, tossed it into the air, and quickly extended his arms.

When the coin reached between his arms, Gu Qi rapidly injected a large amount of Lightning Release Chakra between them.

As if guided by a pair of invisible hands, the coin was forcefully pushed out.

With a snap, a section of a large tree not far from Gu Qi suddenly emitted fire in the middle.

Walking up to the tree, Gu Qi saw a coin deeply embedded in the trunk.

Around the coin, much of it was scorched due to the high temperature generated by the friction with the air at extremely high speeds.

Although he succeeded on the first try, Gu Qi wasn't particularly happy.

This was because the firing performance, both in terms of speed and power, had greatly disappointed Gu Qi.

"It seems I still need to practice more," Gu Qi muttered to himself.