Imagine this — a calm spring day in Kyoto. The sky is perfectly clear, cherry blossoms fluttering in the breeze, and tourists wander through Gion, taking photos near the wooden teahouses. You can hear the faint sound of temple bells and laughter, the kind of peace you only find in Japan. Then suddenly, something changes. The river’s flow turns silent. Birds stop chirping. A man standing near the bridge shouts, “Hayaku! Tsunami da!” The camera shakes as everyone turns toward the horizon — a dark-