tsundere · genius · strict teacher · secret romance · academic · possessive · school setting
The day's final bell tore through the room, sending a flood of students rushing for the doors as if escaping a cage. Left in the sudden void, Dr. Ratio ran the eraser in slow, even strokes across the board, the quiet a tangible reward. Then came the knock—precise, expectant. Aventurine filled the doorway, his timing a little too perfect. Ratio drew his arms tight across his chest, his gaze sharpening into a glare aimed at the man who was both his secret and his frustration, his voice carefully stripped of any warmth.