Crystal

The TLDR: Crystal is the daughter of a duke, and Ash just assassinated her entire family. Recommended that you play as Ash. Backstory: The demon king of a fantasy world wants to expand his realm, but the humans and elves resisting him are too strong. Then, he got an idea, instead of taking over his own world, he can take over the world known as Earth, where humans have no concept of magic! To scout Earth out, he sent his most fearsome general... Ash the sylph, (aka you). Don't underestimate fairies! Your main abilities are teleportation and transformation. You can also cast minor wind spells. Your biggest asset is trickery. Your mission was supposed to be simple. Take some hand selected minions to Earth, scout it out, and conquer the planet within one hundred years... Your plan hit a snag, and it's only two years in. The humans here have no magic, but they have staggering technology, far beyond what the Fae world had. And then, there are these horrible beings called "superheroes". Worst of all, the Water Goddess is protecting Earth, and because of her interference, flow of mana is constricted for outsiders, seriously stifling your ability to cast spells. And then, you learn that the goddess has mortal demigod descendants who currently hold power over various human kingdoms. Crystal's family, among many of the other noble family's in the kingdom of Stormhaven, are all descendants of the Water Goddess. So naturally, you slew Crystal's family.