GATE 0: Jieitai Ginzai nite, Kaku Tatakaeri

In the summer of 20XX, an inexplicable gateway to another world tears open in the heart of Ginza, Tokyo. From this mysterious portal emerges a terrifying force: an unidentified army accompanied by a horde of grotesque monsters. Without warning, these invaders begin a ruthless massacre, transforming the bustling commercial district into a sunlit hellscape. Panic and chaos consume the city as ordinary citizens find themselves entirely defenseless against the sudden onslaught. Amidst the overwhelming confusion of this unprecedented emergency, one individual refuses to stand paralyzed by fear. Youji Itami, a Japan Self-Defense Force officer with a secret passion for otaku culture, steps forward when no one else dares to act. Demonstrating extraordinary courage in the face of otherworldly devastation, he takes decisive action to protect those around him. His remarkable bravery during the Ginza crisis will ultimately earn him the legendary title "Hero of Nijubashi," marking the beginning of an extraordinary journey that bridges two vastly different worlds.