Frame Arms Girl (フレームアームズ・ガール, Frēmu Āmuzu Gāru) is a model kit line produced by Kotobukiya, originally released in 2015 as a spin-off of its Frame Arms mecha line. A manga adaptation by Tsuneo Tsuneishi began serialization in Kadokawa Shoten's Comp Ace magazine in December 2016. An anime television series based on the line aired from April 3, 2017 to June 19, 2017.
Based on the original Frame Arms line, Frame Arms Girl features the robots from that line portrayed as anthropomorphic figurine girls, or F.A. Girls for short, who can be equipped with various armor and weapon parts, including those from the Frame Arms and M.S.G weapon series. The line was designed by Humikane Shimada, based on Takayuki Yanase original mech designs.
In the anime, a girl named Ao Gennai was delivered a prototype F.A. Girl known as Gourai and is tasked with helping her gather data on both battle and emotions. The two soon encounter more F.A. Girls, who Gourai battles against while also having various adventures alongside.
Frame Arms wiki(the actual Kotobukiya Frame Arms toys)