Olivia Stuart is the undisputed strongest Priestess at the Ardentia Magic Academy. In the familiar summoning exam—a sacred ritual that dictates every student's future and prestige—everyone expected her to summon a high-tier Holy Spirit.

Instead, the summoning circle brought forth an ordinary human man.

He possesses no class, no element, and no readable status. In an instant, the academy’s golden girl became its greatest laughingstock.

However, the mockery was short-lived, replaced by a chilling anomaly. Every time the system attempts to analyze him, the power-measuring artifacts cease to function. Student rankings shift without reason, and duel data becomes invalid—as if the world itself is incapable of recognizing his existence.

The man merely introduces himself as Noa.

Since that day, it isn't just Olivia’s reputation at stake. From the shadows of the academy, the entire world system has begun to show signs of a fatal collapse.

What exactly did she summon?