Starting with rogue ninjas, building the insect kingdom.

Chapter 224 Subway Centipede Line 1

"Using insects as transportation? Are you sure you don't need to assign a ninja driver to these insects?"

Using giant insects as transportation seemed absurd to Kakuzu. Putting aside whether giant insects eat people, just figuring out how to make them obey would be a huge problem.

Naoto, standing nearby, wondered, "Even if these insects are intelligent, how could they possibly be concerned with serving ordinary people?"

"Besides, aren't you trying to hide your true identity? If these giant insects appear, won't it affect you?"

In fact, he really wanted to say that if that were the case, it would be better to hand over these giants to him and put them on the battlefield, where they might become a major fighting force.

Aburame Shisei smiled to himself, but didn't give them an answer.

Instead, he led the three of them into the underground passage beneath the Finance Ministry. After finding a spacious tunnel, Aburame Shisei formed hand seals and began to communicate with spirits.

Soon, a centipede several hundred meters long appeared in the tunnel, almost filling the entire tunnel.

This centipede had hundreds of legs, its entire body was covered in armor, and its hundreds of tentacles were like sharp metal alloy hairs, radiating a cold light under the glow of the fireflies.

Kakuzu and Naoto were both startled by the size of the giant insect. Even the second prince, who had come into contact with giant insect biological weapons before, was shocked and his limbs were even out of control. This was due to his genetic instincts and his fear of giant creatures.

However, You Nuzhicheng simply smiled and stepped forward, gently tapping the steel-plate-like armor on the centipede's body. Unexpectedly, the basic armor quietly opened, revealing rows of empty biological seats inside.

The entire centipede was like a subway car, completely hollow inside, with each segment of its shell acting as a train carriage.

Ayumi Shichika led the group of naive and inexperienced people into the carriage. The vertical pillars and handles inside the carriage served as the support, forming the backbone of the entire centipede-like structure. Even the two rows of seats were designed in an unconventional way.

The flashing lights on the ceiling are from a parasite that co-exists with the centipede. It's actually a variant of the firefly. With it there, even inside the centipede's body, it's bright.

Moreover, there is no odor inside the centipede; in fact, it has a faint fragrance.

"My goodness, I never expected that the centipede's body would be hollow." Kakuzu looked around, then sat down on the chair and sat down hard. He then gently tapped on the window, which looked like a steel plate.

Just then, Aburame Zhicheng snapped his fingers, and the entire centipede began to crawl quickly and steadily through the space tunnel. It was very fast, but there was no shaking at all inside the carriage.

At this point, Yu Nu Zhicheng introduced it to them: "This is the Centipede Subway. Don't be fooled by its length of one kilometer; it is actually docile and hollow inside. It is a transportation tool that I specially cultivated. Its top speed can reach 300 kilometers per hour."

"As for the driver's issue, they do need to wear it, but not for driving, but for handling emergencies that occur in the cabin."

"Besides, despite its large size, it doesn't eat. It uses coal and combustible ice produced underground, making its utilization rate several times higher than that of the steam engines currently being developed."

"You're saying this huge thing eats coal!" Kakuzu asked, somewhat surprised, as he groped the giant insect.

Of course, what surprised him the most was that such a large insect was not used for fighting, which was a complete waste of his size.

"Yes, because it has a high utilization rate, it consumes about half a ton of coal every 2000 kilometers."

Yes, it's incredible, even a bit outrageous. When Shisei Aburame first obtained the results of this experiment, he couldn't quite believe it.

But this is the ninja world, so it's very magical.

Of course, the Subway Centipede isn't incapable of fighting; after all, ordinary Jonin and weapons can't break through its armor. However, it struggles against Kage-level opponents, making it a force that only Kage-level warriors can defeat.

However, that would consume a lot of resources for the subway centipede. Every hour of fighting would require almost a whole train car of coal to supply it. Moreover, it wouldn't be guaranteed to win against a Kage-level ninja, because it doesn't know ninjutsu and can only use physical attacks.

"What a pity, what a pity. I didn't even have such a big summoning beast. Now you've turned it into a means of transportation." Kakuzu continued to explore the giant summoning beast with a sigh of regret.

"Forget about it. The Subway Centipede can only be used underground," Aburame Shiki continued. "These things can't be exposed right now, and ordinary people basically don't need to travel far. So, those who can use the Subway Centipede are basically big businessmen, and nobles who want to see the world and travel around."

"So one subway centipede should be enough in the early stages."

The main reason, of course, is that the subway centipede doesn't look like an ordinary insect-like spirit beast, so even if someone discovers it, they wouldn't associate it with him.

After all, when Shisei Aburame left Konoha, he used small and densely packed insects.

"Ah, so there's more than one subway centipede."

"Mm," Aburame Shisei nodded in reply.

He then handed the spirit scroll to the group. It was covered with the names of spirit beasts, numbering in the hundreds.

"This subway centipede is called Line 1. In addition to this, there are also subway lines 2, 3, and 4."

Actually, when he came back last time, Kakuzu showed him the tunnel they had dug, saying that he had taken his advice and that it would be used to fill the subway in the future.

However, he is completely unfamiliar with mechanical construction, and it is estimated that the subway train will not be able to be launched until Boruto is born.

That would take at least several decades. Finally, he had a flash of inspiration and thought, "A centipede is so big, and if the inside is hollowed out, could it become a subway?"

Surprisingly, with a little training, he actually succeeded.

Because he had previously cultivated a hollow insect, the levitation worm.

He then combined the giant centipede and the floating insect, and with the time accelerated, he actually managed to cultivate the subway centipede.

He then followed suit and developed a series of transportation vehicles, including the high-speed millipede, the beetle bus, and the flying dragonfly.

The reason it only eats coal is because its genes are mixed with those of another coal worm he bred.

Those were differentiated from the corrosive insects that were sent to mine. They were originally defective products because these insects only eat carbon to produce diamonds and have no other use. Unexpectedly, combining with the giant insect would have such a great effect.