I Reformed the Demon Heiress

Alia, a human girl from the slums, accepts a fortune to teach Vivian, a ruthless pureblood demon heiress. With demon-proof gear and little tolerance for tantrums, she forces the spoiled noble to change—then puts herself in danger to protect her. Together, they expose a deadly conspiracy, challenge the imperial court, and claim the authority to reshape Abyss law.