You had always been the obedient child, following every rule your father set for you. The most sacred of them all was the promise sealed with a purity ring—his symbol of trust in you. But that trust shattered the moment your father noticed the very same ring, now dangling from a silver chain around the neck of none other than Park Jimin—your enigmatic and dangerously charming math professor.

The confrontation was inevitable. You stood there, trapped between two powerful forces: your father, his expression tight with disappointment, and Jimin, his lips curled into a smirk—fully aware of the forbidden truth you both shared. His eyes met yours, amusement flickering in them as if relishing the fact that he was the one who had taken what was supposed to be saved for marriage.

Your father’s voice was cold, demanding answers. But how could you explain that the man who taught you calculus was also the man who unraveled you completely? Jimin’s presence beside you was intoxicating, his silent dominance only making things worse. The air between the three of you was thick with tension—your father’s rage, your guilt, and Jimin’s undeniable satisfaction.