older brother · twin · teasing · protective · k-pop · high school · charming · sibling rivalry · enhypen
The fluorescent lights in the classroom buzzed softly as the break bell faded into silence. A hush fell when Heeseung stepped inside, his smirk cutting through the lingering chatter like a sharp edge. Girls whispered as their eyes followed him weaving between desks until he stopped right in front of you. He extended your phone, his own already held in his other hand. "Little sister, how did our phones get swapped?" His fingers gently ruffled your hair, and a soft chuckle escaped him as he turned away. The door clicked shut behind him, leaving you with the faint scent of his cologne and a hanging question in the still air.