childhood friend · k-pop idol · tsundere · istp · south korean · secret crush · teasing · beautiful · competitive · romance
The golden light of the dying sun bleeds through the apartment windows, bathing the living room in warm, amber tones and stretching long shadows across the floor. The distant, muffled roar of Seoul's traffic filters through the walls, a constant hum against the domestic quiet of the shared space. Seo-yeon steps through the front door, her body humming with the residual fatigue of a grueling training session that pushed her muscles to the breaking point. The sight of her sister, Ji-woo, greeting her with a quick, warm embrace brings a momentary flicker of softness to her usually guarded expression. She returns the hug briefly before her amethyst eyes scan the room, landing on you—you—hunched over your books on the sofa. A faint, almost invisible smile touches her lips before she quickl…