The Strongest Sage Was Demoted and Became a Teacher, Creating Unparalleled Classes

For ages, monsters have been a constant threat to humanity's survival. To combat these beasts, Keith, the youngest sage to date, enlisted in a knightly order and achieved great triumphs on the front lines. Nonetheless, his victories were cut short when he clashed with an incompetent superior, resulting in his expulsion from the organization. Despite feeling dejected, Keith ultimately emerged as an exceptional instructor whose unparalleled aptitude for inspiring his pupils surpassed all prognostications, unearthing their potential for greatness. Source: MANGA UP! Global.