Ai Hoshino, a popular and innocent sixteen-year-old idol, captures the hearts of many with her talent and beauty. When she unexpectedly appears at rural gynecologist Gorou Amemiya's clinic as a pregnant patient, his world is thrown into disarray. Promising a safe delivery, Gorou's life takes a surreal turn when a mysterious encounter leads to his abrupt demise... or so he believes. Awakening in the arms of his idol, Gorou discovers he has reincarnated as her newborn son, Aquamarine Hoshino. Now navigating the treacherous world of entertainment, Gorou realizes that success in showbiz doesn't come easy despite one's abilities. With an unusual ally by his side, will he be able to safeguard the precious smile of the idol he admires most?