“Koutarou, this is bad!”
The first one to speak was Kiriha who was investigating the main computer.
“What is it?!”
Koutarou hurriedly rushed over to Kiriha upon hearing her panicked voice and seeing her anxious and tense expression.
“Take a look at this! It appears to be the blueprint for a large-scale weapon!”
“What the heck is this?!”
On the screen of the computer that Kiriha was investigating was a huge structure reaching over ten meters. It seemed to be a weapon like she had said, but it was just so big it looked like a building.
“I can't tell you any details until I look into it more, but it appears that this is a weapon that can cause a massive earthquake over a large area!”
“You're saying that they're planning on using this to randomly attack the surface?!”
As it was a massive weapon, it's blueprint took up a large amount of data. Having noticed it, Kiriha casually opened it up, but its contents came as a huge surprise.
This weapon would stimulate the spiritual energy running through the planet, known as ley lines, at a certain point and disrupt the flow of energy. That disruption would spread through the earth's crust and cause a massive earthquake. If left alone, Japan would be struck by a natural disaster with an unprecedented scale. The cities would cease to function and the coastline region would be swept away by tsunamis.
“Kiriha-san, if they use this something unimaginable will happen to the surface!”
“It won't just be the surface! An earthquake of this scale wouldn't leave my hometown unscathed either! No, maybe that's their goal?!”
Living underground, the People of the Earth were easily affected by earthquakes. As they were producing an earthquake inducing weapon, the radical faction must have noticed these risks.
The radical faction's goals were options. There were mainly two of them.
First they would attack using a method that the people of the surface wouldn't realize was an attack. The surface dwellers don't know that earthquakes can be caused artificially. They would simply assume it was a natural disaster. After destroying the surface they would march forward with their army and occupy the city. Since this would happen after a massive earthquake and tsunami, there was no way to prevent this invasion.
Their other goal was to destroy the hometown of the People of the Earth. By robbing them of their homes, they would force them into a situation where they had to rise to the surface. If the surface dwellers found out that the People of the Earth had caused the earthquake they wouldn't be able to tell the difference between the conservative and the radical faction and would attempt to annihilate the entirety of their race. That's why by threatening to disclose information would force the conservatives that had lost their homes to cooperate with the radical faction.