Gyakuten Sekai no Denchi Shoujo
English title: Rumble Garanndoll
Japanese title: 逆転世界ノ電池少女
Type: TV
Source: Original
Episodes: 12
Status: Finished Airing
Aired: Oct 11, 2021 to Dec 27, 2021
Broadcast: Mondays at 23:00 (JST)
Duration: 23 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Lerche
Producers: Studio Hibari, Lantis, AT-X, Tokyo MX, BS11, Egg Firm, Quaras, Kadokawa, Bandai Namco Arts, MAGNET, Scarlett
Licensors: Funimation
Genres: Action, Comedy, Sci-Fi
Themes: Mecha

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 now arrived for Japan. 

(Source: MAL News)