[Machine Translation] This is the story of the fate of girls who survive in a world invaded by bugs. Armored bugs" are the incarnation of mutated insects that have destroyed civilization and laid waste to mankind. The only countermeasure is a butterfly queen, a group of girls who have evolved into insects that are different from armor bugs. Ayumi, a candidate for Butterfly Queen, is labeled as an inferior student, and despite her despair, she continues to train every day with the mission of "saving the world" in mind. However, what awaits Ayumi after all her hard work is the betrayal of her best friend and an unbearable reality. Ayumi is at the mercy of fate to survive in this harsh world, and to take back the world. This is a story of girls who struggle to survive in a harsh world and to take back the world.