Zero is a young man who met a tragic end in his previous life. Upon reincarnation, he is bestowed with a divine gift, "Infinite Regeneration"—the power to revive endlessly, as long as his body is not completely annihilated. However, this supposedly cheat-level regeneration ability is useless against the kind of overwhelming magical power that can vaporize a human body in an instant!

"This Infinite Regeneration is useless!"

Determined to grow stronger, Zero subjects himself to a hellish training regimen under the guidance of Elesdia, a fellow female knight from his order. By enduring relentless beatings and pushing his limits again and again, he begins to carve out his own path to strength. Will this reckless training lead him to true power—or an even harsher fate?