Within the vast mana reserves of Solveig the Great lies a deadly secret: if her self-doubt ever gets too high, her mana will overload and detonate her from the inside out! To protect those around her, she uses an impenetrable shield of false confidence—which, unfortunately, makes her look like an arrogant, annoying brat.

So when the Demon King was defeated by her hand, people realized they didn't need to tolerate a bratty hero anymore.

Homeless, unemployed, and completely broke, she is soon given the opportunity of a lifetime: a spot at a prestigious royal academy! The principal's one condition? Tutor the Duke's ungifted son, Cain II, into becoming a worthy leader. It’s unfortunate, then, that Cain openly admits he thinks she’s a fraud.

With her impossible student constantly crushing her self-esteem, Solveig must maintain her persona to survive. Because if Solveig doesn't improve her self-worth soon, she's liable to blow up his reputation... including her own!