“Papa, it’s me. Your daughter.”I don’t have a child.Twenty-one-year-old Itsuki is barely scraping by when a little girl suddenly shows up at his door, carrying an official birth certificate bearing his name.Name: Yuna.Date of birth: Nine years ago.Father: Nishida Itsuki.Mother: Kanzaki Sayaka.Kanzaki Sayaka—a top-tier idol who exists in a world utterly beyond his reach.Standing inside his cramped 1K apartment, Itsuki is forced to make a choice: reject this impossible reality, or surrender to a scenario meticulously orchestrated by a nine-year-old child.Because behind Yuna’s impossibly calm smile, Itsuki knows this isn't just a game of playing house.It's the beginning of something incredibly troublesome.