Synopsis

In a forest where birds sing and sunlight filters through the trees, the familiar landscape of mountains and rivers remains unchanged. In a cabin surrounded by greenery, Mana prepares a meal while waiting for her childhood friends, Nanami and Yuka, to arrive with her dog by her side. The two friends arrive late, and as always, they chat, grill meat at the barbecue, enjoy their favorite drinks, and playfully fight over hamburgers. The three dance to loud music, having fun, but an occasional sense of unease lingers. Suddenly, a siren blares, and the sound of an approaching aircraft fills the air. They pass a member of the Self-Defense Forces shouting, "Run away quickly!"...