In the Frontier, two militia pilots fight against the IMC as the battle rages on from one planet to another. But on one attack on the IMC, the two are launched into another universe. One that happens to contain a certain witch group fighting their own war against an alien foe... Rated T for some graphic scenes and swearing.

After a plot device explodes Ram,Rom, and Yoshino are swapped out of their own worlds and into each other's. Yoshino ends up in Gamindustri with Nep and the others who work to send her back while in the world of Date A Live Ram&Rom are mistakenly believed to be Yoshino who has been separated like the twins. Naturally Ram intends to milk the confusion for all its worth.

Kazuto ended up going to a school where everyone else was a girl, thanks to Kikuoka. Well, it can't be that bad. There's another boy here named Ichika Orimura. He'll make friends along the way, and maybe he'll even see familiar faces. These are the expressions of black and white. IchikaxHarem, KazutoxHarem.