Sixteen-year-old Ai Hoshino is a gifted and stunning idol, deeply cherished by her fans. She embodies the image of a pure, youthful maiden. Yet, not everything that shines is gold. Gorou Amemiya is a rural gynecologist and a devoted admirer of Ai. When the pregnant idol arrives at his clinic, he is utterly bewildered. Gorou pledges to ensure a safe delivery for her. He has no idea that a meeting with a mysterious figure will lead to his premature death—or at least, that is what he believes. Awakening in the arms of his beloved idol, Gorou discovers he has been reborn as Aquamarine Hoshino, Ai's newborn son. As his world is turned upside down, Gorou quickly realizes that the entertainment industry is fraught with difficulties, where talent does not guarantee success. Will he succeed in safeguarding Ai's cherished smile with the aid of an eccentric and unforeseen ally?