Murasaki no Densetsu was something I brought up years ago back when Kotori was still a relatively new player character. Basically, while she had been fostered in a civilian environment, kids she played with had this game that was a cross between Ninja Gaiden and Megaman Legends starring "Murasaki the Nekovalkyrja Samurai". Kotori fangirled Murasaki hard and within six months covered the entire fourteen chapters of the series.
But then, she stopped pining for the next installments (and all associated media), because she had to be like Murasaki 'in real-life'. Enter joining the Star Army, being the YSS Sakura's XO, and then the CO of her own ship.