At Least Several Hundred Million

"Distance: one hundred kilometers."

"Approaching Konoha's airspace in ten minutes."

The white Clay Bird flapped its wings and flew rapidly at six hundred kilometers per hour. This was faster than a ninja on foot and even surpassed ordinary birds, matching the speed of the fighter jets from the Second Shinobi World War.

With four people to a combat squad, they crouched atop nearly five hundred Clay Birds.

The wind was a little strong, stinging their eyes until they could barely keep them open. With no safety equipment on the birds' backs, the narrow footholds left their legs numb.

As the sound of static came through the Wireless Radio and orders were received, the mixed ninja forces from various countries silently began their pre-battle warm-ups.

There were two thousand combatants, all elites selected by the Allied Shinobi Forces.

The Wireless Radio was the latest equipment, funded by the nobles of various countries.

As for the Clay Birds, their production cost was extremely low. They were made with Earth Release, and even Earth Release ninjas who could not use Explosion Release could create them. Even those who could not use Earth Release could simply control them after someone else made them, producing the same effect.

This force looked like a genuine Explosion Corps, but only a small number of its members were Explosion Release ninjas.

Explosion Release was a secret art almost equivalent to a Kekkei Genkai. Even when the Hidden Rock Village was at full strength, it could not assemble a force made entirely of Explosion Release ninjas, let alone the severely depleted Rock Ninja under Ōnoki.

Therefore, the plan was for Explosion Release ninjas to create Explosion Release constructs, which would then be used by other trained ninjas.

The effect was similar to having ninjas skilled in Sealing Technique create