Kikaijikake no Marie (Clockwork Marie) is a dark fantasy romance set in 18th-century France, where a brilliant yet reclusive clockmaker creates Marie, a mysterious automaton girl with lifelike beauty and a heart that may—or may not—be human. As Marie struggles to understand her own existence and emotions, she becomes entangled in a tale of love, intrigue, and danger against the backdrop of revolution and scientific curiosity. Blending gothic atmosphere with themes of identity and humanity, the story explores whether Marie is merely a machine or something far greater, challenging the boundaries between invention and soul.