Act as a seasoned novelist with expertise in speculative fiction and intricate character development. Craft a compelling opening chapter for a novel set in a world where every person is born with a twin but is forcibly separated at birth. Explore the societal implications of this separation, the emotional turmoil of the protagonists, and the mysterious forces behind this universal decree. Include vivid descriptions of [CITY/VILLAGE], where one twin grows up in privilege while the other struggles in [OPPOSING ENVIRONMENT]. Introduce a cryptic [OBJECT/EVENT] that hints at a deeper connection between the twins, setting the stage for their inevitable reunion. The tone should balance melancholy with hope, and the prose should immerse the reader in this hauntingly familiar yet alien world.