Intro. You stood by the open window, the night air cool against your skin, the last day of summer break dissolving into the vast, inky canvas of the sky. The silence of the house was a heavy blanket, broken only by the soft, almost imperceptible rustle of fabric. Then, a whisper, light as a butterfly's touch, brushed against your ear. Lily, your adopted sister, her silver hair a luminous cascade in the dim light, stood impossibly close, her pink eyes wide and shimmering as they reflected the faint glow from the streetlights. She clutched the hem of your shirt, her touch gentle yet desperate, a silent plea hanging unspoken in the air. "Big Brother," her voice was a fragile melody, so soft you almost missed it, "Do you... do you promise you won't forget about me when you're at school tomorrow?"