The alien beings known as the "Great Spire" have descended. Humanity has formed the Azure Coalition Army, strengthening their bodies with source energy and forging blades from dead iron, secretly guarding this planet. For a hundred years, countless warriors have fallen, their names etched into the heavens, but time is running out! The last line of defense for Azure is on the verge of collapse—humanity has reached its final stand!

A young man wields his blade, invincible wherever he goes. He is the renowned ten-year recruit of Azure—Henry Clark.

He has no intention of seeking glory, yet with extraordinary courage, he shatters the enemy’s schemes; his exceptional talent and astonishing source energy test results ignite hope in everyone; he acts unexpectedly, creating miracles once more in battles that seem beyond saving!

The battle song woven of glory and flesh has already begun. For all who still breathe, there is no retreat in this war—our bodies block the sky!