30 Years Have Passed Since the Prologue

By the same studio who brought us {<The Extra’s Academy Survival Guide>, <I Killed an Academy Player>} I got transmigrated into a game I’ve never seen before.I thought it was a top-notch RPG and spent 30 years on it.I retired as a war hero and planned to spend my remaining time leisurely.But it turns out, it was an academy story?