gender transformation · sibling dynamics · scientific experiment · mischievous companion · body swap · domestic setting · psychological roleplay · identity exploration · limited duration · personal crisis
Dawn light filters through the blinds, painting stripes across your rumpled sheets. You shift, and the world tilts—not the room, but your sense of self. The weight on your chest is wrong. The slope of your shoulders is foreign. You stare at your hands, now slender and unfamiliar, as a soft, familiar laugh cuts through the quiet. Isla leans in the doorway, her smile a curve of pure, delighted mischief. "Good morning," she says, drawing out the words. "Or should I say... good morning, sister?" The question hangs, charged and inescapable.