The MC inherits nothing but crushing debt. To repay the Duke his parents wronged, he is forced into servitude. A mysterious offer from Master Jay, the head butler, leads him to a remote estate with double pay—where he discovers the Duke’s illegitimate daughter, hidden away for lacking magical talent. Amid magical accidents and uneasy trust, they strike a risky deal: he will help restore her lost power, and she will help him rise in status and clear his debt.