"Wooo-!"
A piercing alarm sounded, and a large number of ninja immediately rushed into the city.
"Enemy attack! Everyone, take cover! Hurry!" multiple voices shouted.
After the previous attack, every part of the Land of Fire had raised its vigilance to the highest level.
Both visible and hidden sentries had been added in various locations.
They stood guard in shifts around the clock.
This time, the alarm sounded before the ninja from the Land of Sky even reached the city.
The Federation's ninja reacted immediately.
The first group of defenders took up positions in front of the city.
Meanwhile, an orderly evacuation began within the city to minimize casualties.
"Quick, bring out the Research Department's latest ninja tools!"
At the squad leader's command, the Scientific Ninja Tools that the Research Department was still testing were brought out.
These Scientific Ninja Tools were the work of Orochimaru and Amado Sanzu.
Orochimaru was a learned, versatile scientist with knowledge spanning many fields, while Amado Sanzu possessed extraordinary talent in the field of Scientific Ninja Tools.
These Scientific Ninja Tools were weapons resembling rifles.
However, they required no ammunition. The user simply had to grip the handle and channel chakra into the weapon to fire chakra bullets.
Since they fired chakra bullets rather than actual bullets or physical ninja tools such as shuriken, kunai, and senbon, their range far exceeded that of conventional ranged ninja tools.
Yet the chakra bullets' power did not diminish despite their extraordinary range.
Still, the Research Department was a research department, not an arms factory. Its production capacity was limited, and even a large city only had a limited number of chakra firearms.
At present, they could only bring out sixteen chakra firearms. Everyone else still had to use kunai and shuriken against the airborne enemy.
With support