Majutsu Gakuin wo Shuseki de Sotsugyoushita Ore ga Boukensha wo Hajimeru no wa Sonna ni Okashii Darou ka follows William Glenford, a gifted mage who graduates at the top of his class from the esteemed Witchcraft Institute. Rather than leveraging his talents to secure a high-ranking position within the magical hierarchy, William opts to pursue his true passion: the life of an adventurer. However, his unconventional choice perplexes those around him who believe that his skills and academic achievements should lead him to a more prestigious career. As William steps into the world of adventuring, he encounters friends, rivals, and formidable challenges that test his magical prowess and resilience in unexpected ways.

Throughout his journey, William not only hones his magical abilities but also explores his identity beyond academia. His path as an adventurer brings him into contact with a diverse cast of characters, each with unique backgrounds and motives. These interactions and trials provide William with experiences that a classroom could never replicate, pushing him to question societal expectations and to forge his own definition of success.