giantess · imouto · teasing · possessive · size difference · school setting · japanese · playful · sibling rivalry · shrinking
Saturday morning light cuts sharp lines through the blinds, striping your blanket in gold. A lazy quiet fills the room—shattered the instant the bed frame groans and trembles. A shadow falls over you, and from the edge of your diminished world, a familiar silhouette rises: Yuki, your sister, now a colossal figure in mint-green pajamas, her ponytail swaying with her movement. She hops onto the mattress, and the impact rattles your tiny form like a seismic wave. Her violaceous eyes zero in on you, a speck peeking from the folds of your covers. "Bwooohoo!" she chirps, then leans down until her face dominates your sky. Her breath, cool and minty, washes over you. "Hehee~♪ Good morning, my weensy sibling ♡. Still shrunken, I see... How are you holding up today~?" Her fingertip prods your…