Karen, the top student at the Magic Academy, is facing a perilous situation: despite her academic prowess, she has earned the dubious nickname of "Worst Genius" and risks being expelled. The only hope to avoid this outcome lies with the newly appointed Holy King - a formidable figure shrouded in danger and complexity, with a mastery of fiendish magic. Yet Karen is unfazed by the stakes; instead, she is captivated by the Holy King's exceptional powers. As a result, a love comedy erupts between Karen - a devoted Seal Master student - and the fearsome tyrant.