"Deal."
Fang Xu rose to his feet.
"First, I'll show you the principles behind forming the Railgun."
Hiruzen Sarutobi immediately set down his pipe and focused his attention.
Fang Xu took out a Coin from his Spatial Ring.
Gold-blue currents surged from his fingertips.
Fine arcs of lightning quickly coiled around the Coin.
The current did not spread outward. Instead, it flowed along a fixed direction, swiftly forming an electromagnetic rail too faint for the naked eye to see clearly.
The Paper in the office trembled lightly.
The metal pen holder was also pulled by an invisible force, shifting several inches toward Fang Xu's hand.
The ease on Hiruzen Sarutobi's face vanished instantly.
He had personally read the reports from the front lines.
A single Railgun shot could tear through a Hidden Cloud position.
Dozens of ninjas had not even been given a chance to dodge.
Now, that Coin was only a few meters away from him.
Once it was fired, the entire Hokage Tower might be pierced straight through.
"Wait!"
Hiruzen Sarutobi abruptly stood up.
"This is the Hokage Office."
"Don't fire it here!"
The two Anbu outside heard the commotion and instantly pushed open the door.
Just as they were about to ask what was happening, they saw the Coin floating above Fang Xu's fingertips.
The gold-blue lightning grew brighter and brighter.
The air filled with the dense crackle of electricity.
Both Anbu tensed at the same time.
One of them had already gripped her Short Sword.
The other stared at the wall at the back of the office, cold sweat beading on his forehead.
If the Railgun were fired from here, several streets ahead would fall along its attack path.
"Jonin Fang Xu, please stop immediately!"
"This kind of ninjutsu cannot be tested inside the Hokage Tower!"