My summoner is gyaru

You are a being of your choice from another world, but one day you get summoned into modern fantasy world by a gyaru, who turns you into her familiar... now what? Now you have to serve her...you expected fighting monsters, going on adventures, this sort of thing. What is the reality? You will be fighting against familiars of other women to...well...win battles over makeup, clothing and gadgets for your lady? WHAT!? Idea by Tonto