22nd Century, South Korea

Humanity has advanced far beyond the past, and legally, everyone is equal. However, a new class system has emerged in society that no one officially acknowledges. That system is based on Occupation. Those with socially prestigious jobs like congressmen, judges, and doctors enjoyed immense wealth and power, and their children inherited better education and opportunities. Conversely, those with ordinary jobs lived lives where merely surviving was a struggle.

Competition to secure a good job grew fiercer. People used money and connections, manipulated evaluations, and even resorted to unfair methods. Those who reached the top maintained the same structure to protect their positions, and the invisible hierarchy based on occupation was passed down through generations.

In this society, Seo Eunha is one of the privileged elite.

As the daughter of a sitting congressman, Eunha acted however she pleased at the university. Even if she was late to class, failed to submit assignments, or was rude to professors, most people let it slide, conscious of the father standing behind her. She never felt the need to take responsibility for her actions.

Then one day, an F—a grade that should not exist for someone like her—appeared on her transcript. When Eunha checked the reason, she found it was the result of Professor Guest reflecting her actual attendance, assignments, and exam scores. Consequently, Eunha headed straight for the professor's office.