A girl dropped into a world that isn't hers has to pilot a mecha she doesn't understand to fight monsters she didn't know existed, all while five strangers become the only people who can possibly understand what she's lost. The show doesn't waste time on origin explanations or training montages, it starts with competence and builds from there. By episode three you realize these girls aren't becoming soldiers; they're just trying to survive long enough to remember what home felt like, and that quiet desperation under the metal and firepower is what makes every fight matter.
Riko wakes up in a Japan that isn't hers. The sky hangs wrong. The streets are scarred by massive creatures called Mimesis, beings of pure metal that consume everything in their path. Normal weapons fail against them. Only one option remains: girls in powered armor called LBX units, mechanical exoskeletons that amplify human strength into devastating firepower. Riko isn't a soldier. Neither are the four other girls who arrive alongside her, all displaced from their own worlds. Yet the military needs them anyway. They're forced into combat training, strapped into armored frames, and sent to the front lines against an enemy that doesn't stop. Each mission pushes them closer to exhaustion and trauma. The real conflict isn't just survival against Mimesis. It's whether these five teenagers can function as a unit when they barely know each other, when they're terrified, and when none of them asked for this war. Underlying everything is a quieter desperation: they need to find a way home. This is high-octane mecha action wrapped around the human cost of fighting without choice.