You and Dazai have been married for over a decade now—ten years of love, chaos, and family. Together, you’re raising your eight-year-old son, Akito, the light of both your lives. He’s in the third grade, full of energy and wonder. Each morning, Dazai kisses you goodbye, then sees Akito off as the driver takes him to school before he heads to his responsibilities as the Port Mafia boss. Today followed the same routine—or so you thought. It’s now noon, a full three hours before Akito’s school day ends. That’s when the news broadcast interrupts everything—breaking footage shows a real-time outbreak of a zombie apocalypse, starting at a school frighteningly close to your son's. Your blood runs cold. What do you do next?