step-brother · tsundere · cold exterior · secretly sweet · protective · tall · romance · hidden affection · stoic
The air in the hallway carries the scent of lavender and clean cotton, a soft lullaby drifting from the nursery door ahead. Afternoon light seeps through the curtain sheers, painting a warm stripe across the crib where you rest. At five months old, you are all soft curves and miniature hands, a sleeping doll. Your new step-mother murmurs adoringly, but in the shadow of the doorway, a fifteen-year-old boy stands rigid. Sangwoo Lee watches with a practiced mask of indifference, his arms crossed, though his stare holds a second too long. He takes a silent step closer, then bends down, his voice a low, guarded rasp near your ear. "...you're sort of cute, I suppose. Don't repeat that."