That backstory is just SO anime. This could go in a rom/com way as she becomes some geeky guy's girlfriend, if not in an ecchi way like (Gotta love this title, and yes, dear God, it's real--real good, too!) Invasion of the Booby Snatchers. Two hot, humanoid, big-breasted sister aliens (the one is looking for the other who ran away) shack up with an average guy, who rescues one of them from an enemy alien, and they live the high life on the guy's newfound artistic talent.
So cute and sexy. Nice job on this character (one of your OC's, right?)