Nuclear World.
Japan, Tokyo, Chuo Ward, Ginza Avenue.
At this moment, the orderly ranks on the smooth concrete street were no longer soldiers.
They had been replaced by grass-green camouflaged main battle tanks and infantry fighting vehicles.
They were the Japan Ground Self-Defense Force's Type 74 Main Battle Tanks and Type 89 Infantry Fighting Vehicles.
The soldiers had long since climbed inside these armored vehicles, holding Type 64 Automatic Rifles loaded with "full-power rounds" as they quietly waited for the unit to move out.
Originally, they had used "intermediate-power rounds."
However, according to combat experience from the "Ginza Incident," while intermediate-power rounds could penetrate the fine metal armor and metal shields of Otherworld soldiers,
the remaining force after penetration caused little damage to the human body unless they struck a vital area.
They also had to consider the many magical beasts in the Special Region beyond the Gate.
There were even creatures like dragons.
The Type 64 automatic rifle's intermediate-power rounds could only cause a certain degree of shattering to those Pterosaurs' scales, but could not penetrate any further into their bodies.
Material testing eventually revealed that these dark-blue dragon scales possessed strength comparable to M78 Tungsten Steel.
Tungsten steel, a tungsten-titanium alloy, possessed characteristics such as high density, high strength, high hardness, corrosion resistance, and rust resistance.
It was widely used in hardware, machinery, chemicals, national defense, and other industries to produce high-precision, highly wear-resistant key components.
Its drawback was that it was somewhat brittle, easily fractured under external impact, and difficult to process.
Yet dragon scales had none of these flaws. They were a remarkably strange biological material.
This counted as one of Japan's greatest gains from this expedition.
Therefore, the Japan Ground Self-Defense Force had re-equipped the "advance unit" with full-power rounds.
They had conducted tests using