Meanwhile, two dark, silent paragliders were flying fast at an altitude of two hundred meters.

This kind of silent paraglider used lithium batteries to operate the electric engine, so it did not produce the noise generated by the fuel engine when it was running.

Moreover, the fan blades of the paragliders were very carefully designed to produce very little air noise when running at high speed.

The Japanese ninja’s lack of strength was compensated for by modern equipment and technology, and this had always been the direction of development among them.

In the early years, the Japanese ninja not only had to practice ninjutsu, but they also had to be proficient in chemistry as they had to formulate all sorts of bizarre equipment and weapons.

On TV, it was often shown that when an ancient ninja dropped a ball on the ground, smoke was instantly ignited, and when the smoke disappeared, so did the ninja. This was not a dictionary scene, but a historical reality.

The spheres used by the a