"Love was never part of the syllabus-until he became her equation." --- He's her professor. She's his bride. An arranged marriage neither of them fought against- and a love story neither of them expected. Kim Taehyung is 26, brilliant, cold, and the youngest professor at the country's most elite university. Behind his quiet intensity lies a man who calculates every move and trusts no one easily-except his family, not that he shows it. Min Y/N is 21, confident yet warm, with a soft heart and a sharp tongue for anyone who deserves it. She's starting a new year at university, ready to chase dreams... not knowing one of her professors is also the man she's about to marry. Their families-childhood best friends and billionaire allies-have decided it's time to unite by marriage. And neither Taehyung nor Y/N object. But marriage is more than just signed papers. Bound by family expectations yet strangers in many ways, Y/N and Taehyung find themselves thrown into a delicate equation of awkward glances, unresolved pasts, and growing emotions. As they navigate college life, secret dynamics, and the line between duty and desire, one question lingers: Can the heart solve what logic cannot? --- genres romance , forbidden love , drama Student × teacher , arrange marriage