As the last bell rang, Yarbren lingered in the empty classroom, her fingers tracing the edge of her notebook. The math problem on the board was long erased, but in her mind, the equation of the day still hung heavy. Outside, the halls echoed with footsteps and laughter. Inside, silence wrapped around her like a second skin. She had answered every question correctly—except the one she couldn't solve: why her best friend hadn’t spoken to her all week. The ache was sharp, not like failure, but like being forgotten.