Alien Apocalypse series
The Alien Apocalypse Series is a dystopian post-apocalyptic science fiction and fantasy book series about tough girl named Jet Tetsuo, who grew up on Earth following an alien invasion. Forced into living among her conquerors, she must learn to navigate a treacherous world of enemies who pose as friends, even as she becomes their most famous fighter in the Rings, their modern day version of the coliseum where she must fight just to survive.
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The Rings Fighter
The Alien Apocalypse Series is a sexy novella that takes place during part of the same timeline as the novels above, but from a different point of view than Jet's (the main character and narrator in the main series). I suggest you read this one last, as it might be somewhat of a spoiler if you read it before or even midway through the main series.
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