Browse - Most popular shows featuring: military invasion^x

Japan, 2019, just before the dawn of a new era. Suddenly, a rift to another dimension appears in the sky, revealing an alternative world "Shinkoku Nippon," with the sky and the earth upside down. This parallel world keeps their former militarism, with its era being Eternal Showa. The military invades the real Japan with giant humanoid robots called "Garann" and their gas weapons "Genmu", rendering our modern weapons ineffective. "Shinkoku Nippon" instantly seizes the government and achieves de facto conquest of Japan. The new era, "Reiwa," has not arrived for Japan.

The story is set in an era when 70% of the human race lives in space due to the development of space cities. Between two major powers-the Dorushia Military Pact Federation and the Atlantic Ring United States (ARUS)-there is a small neutral nation called Jiouru that has prospered economically. The protagonist Haruto, a high school student who lives in Jiouru, encounters the mysterious "forbidden" humanoid weapon Valvrave when the Dorushia army invades.