Following the chaotic and heartwarming daily lives of Kaijuu who have come to Earth to conquer the world and live with their human masters.
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(Source: MyAnimeList)

The story begins when Ao opens a package that arrives at her doorstep. Inside the package is Gourai, a Frame Arms Girl: a small robot capable of independent movement. Gourai is a newly-developed prototype: a Frame Arms Girl equipped with an "Artificial Self," an advanced AI that gives her a personality. Ao is the only one that has activated her. Gourai begins to gather both battle data and emotions, starting a day-to-day life with Ao, who knows nothing about Frame Arms Girls.<br><br>

(Source: Anime News Network)

Kotobukiya