Sam Winchester has always been different, visions, powers, destinies he never asked for. But nothing prepares him for the moment he looks at Castiel and sees something no human should ever see: the full spread of an angel's wings, unfurled behind him like midnight stitched with living light. Castiel insists he didn't reveal them. He couldn't have not without intent, not without a bond powerful enough to rewire celestial laws. But the truth becomes impossible to ignore: angels only reveal their wings to their soulmate. While Sam struggles with the idea that fate might have chosen someone for him, especially an angel, Castiel wrestles with the terrifying weight of what it means to be bound to a human whose life is constantly on the edge of ending. As Heaven becomes suspicious, demons begin hunting for the "human who sees grace," and the bunker grows a little too small for the feelings they pretend not to have, Sam and Cas must decide whether to fight destiny... or fall into it together. A slow-burn, wing-touched soulmate romance where grace recognizes its partner long before the heart is ready.