Shin Wolford, a Japanese salaryman in his previous life, is reborn as an infant and raised by the legendary sage Merlin Wolford, who names him grandson and trains him without pause in magic and combat. By age fifteen Shin can out-duel seasoned mages, but Merlin realizes he never once taught the boy ordinary social skills. This light novel follows Shin as he leaves his grandfather's home for magic school, where classmate Sicily von Claude has to contend with his overwhelming power and total cluelessness.