Cast:
Gennai Ao (voiced by Hikasa Yoko) is a very ordinary first-year high school girl. One day / she received a mysterious package. After opening the package / what appeared in front of Ao was a small robot named "Frame Arms Girl" Todoroki (voiced by Kaho Nami). Honglei is not an ordinary robot. She has self-awareness and can continuously evolve herself by learning human emotions and fighting methods. In this way / Xiao Cang and Honglei's cohabitation life began. Besides Hong Lei / there are other mecha girls. Dagger with a very arrogant personality (dubbed by Ayase Yu) / Shanyan (dubbed by Yangtze River Riga) who has a simple personality but has a vast knowledge / Xunlei (dubbed by Kashan Minami) who acts carelessly but is full of justice / Bone Princess who has no emotion and is taciturn (dubbed by Hibiki Yamamura). After the thunder / they appeared next to Xiao Cang one after another.
源内苍（日笠阳子 配音）是一名十分平凡的高中一年级女生，一天，她收到了一个神秘的包裹，拆开了包装，出现在小苍面前的，是名叫“Frame Arms Girl”的小型机器人轰雷（佳穗成美 配音）。轰雷可不是一般的机器人，她拥有着自我的意识，能够通过学习人类的感情与战斗方式而不断地自我进化，就这样，小苍和轰雷的同居生活拉开了帷幕。 除了轰雷外，还存在着别的机甲少女。个性十分傲娇的短剑（绫濑有 配音）、性
