30 Years Since the Prologue

[By the Studio that brought you <The Extra’s Academy Survival Guide, I Killed an Academy Player>I "transmigrated" into a world I'd never seen before.For thirty years, I believed I was living in a classic fantasy RPG.I became a war hero, retired, and thought I was finally about to see the ending.But...Those thirty years were only the prologue.It turns out the real story is about an academy?