It's more based off of the interplay between the nobility and more common people. The jist is that humanity, after colonizing other worlds, became more or less a monarchy, with it's own nobility forming as a result. Those born in the Sol System received more rights that those born in the.colonies, leading to tension and eventually open rebellion. I have this idea of a forbidden relationship between a princess of the Earth government and a mecha pilot from the Rebellion. Really explore the differences in upbringing, worldview, and philosophy, while also showing how similar they are in many ways.