Path of the Broken Core [Academy Cultivation Progression]

Academy cultivation progression fantasy. Broken-core underdog. Diagnostic system, tactical weak-to-strong growth, no harem. Lin Ash should have failed the entrance test. His core is cracked. His aether leaks faster than he can gather it. In Greyspire Academy, that means one thing: thirty days at the bottom of the rankings before he is thrown out. Then the testing array recognizes something it should not. PRISONER CLASSIFICATION: ACTIVE The record vanishes. The examiners pretend not to see it. And a broken diagnostic protocol wakes inside Lin's ruined core. It does not grant him strength. It does not hand him spells. It only shows him the shape of failure: the timing of a strike, the flaw in a formation, the energy his body cannot hold. At Greyspire, every student is chasing a perfect core. Lin may survive by doing the opposite. If he can turn leakage into movement, pain into data, and defeat into a path no one else can see, he might earn a place among the academy's ranked students. But every improvement stirs the seal buried inside him. And something beneath Greyspire is beginning to answer. What to expect: academy rankings, cultivation mechanics, system diagnostics, tactical progression, survival trials, slow-burn mystery, no harem, no love triangle.