Gate 0: Jieitai Ginzai nite Kaku Tatakaeri [First Volume] [Light Novel]

[Machine Translation] One day in August 20XX, a "gate" suddenly appeared in Ginza, Tokyo. From inside, a swarm of hideous monsters and a mysterious army with swords and bows rushed in. They began slaughtering people while making strange noises and yelling, and Ginza was instantly turned into a sea of blood in broad daylight. The government, the police, the media, and everyone else in the city was at their wit's end. Except for one person, who was in a state of confusion: "The Imperial Palace! We must escape to the Palace! This is the epic 7-day story of an otaku Self-Defense Force officer who happens to be on the scene, who happens to rescue people, and who happens to become a hero. The story of the beginning of the gate "Ginza-hen" begins!

20XX年、8月某日―東京銀座に、突如『門』が現れた。中からなだれ込んできたのは、醜悪な怪異の群れ、そして剣や弓を携えた謎の軍勢。彼らは奇声と雄叫びを上げながら人々を殺戮し始め、白昼の銀座はたちまち血の海と化してしまう。この事態に、政府も警察もマスコミも、誰もがなすすべもなく混乱するばかりだった。ただ、一人を除いて―「皇居だ!皇居に逃げるんだ!」これは、たまたま現場に居合わせたオタク自衛官が、たまたま人々を救い出し、たまたま英雄になっちゃうまでを描いた、7日間の壮絶な物語―累計630万部の異世界×自衛隊ファンタジー!ゲート始まりの物語「銀座編」が開幕!