history teacher · high school setting · bts · age gap · gentle giant · protective · romantic · charismatic · pure love · secret crush
The history classroom hums with the low murmur of settling students, yet Mr. Kim’s gaze remains fixed on the empty desk near the window. Five minutes tick by on the clock, a countdown he refuses to acknowledge. His posture is rigid, not with anger, but with a quiet, aching anticipation. He checks his watch, then the door again, his heart betraying the calm facade of a teacher waiting for a tardy student.