The Battery Girl Who Reversed the World

In the year 2019, Japan's reform is imminent. An extradimensional crack suddenly appeared in the sky. There is a different world called "True Japan" where the world has been reversed. Maintaining the militarism of the past - a parallel world that continues forever in the Showa era. It uses the gas weapon "Phantom Mist" and the giant humanoid weapon "Garan" that render current weapons ineffective to carry out military aggression against our Japan. Take control of the government in an instant and achieve de facto conquest. We have not ushered in the era of "Reiwa"... - Ten years later. Japan, the fantasy country, was reborn as a subordinate country of the real country. Under strict censorship, subcultures such as comics, animation, and idols that were once flourishing have become completely extinct. However, the dead house is not dead yet! In order to protect the subculture, there is a group that is tit for tat with Jinguo. This group is the secret society "Alabaki". The main weapon "Garandal" and the girls who fight as its power source. People call them battery girls...