Re-training this character from Azur Lane sharing my birthdate fared better than Nautilus since her dataset had a few more images than her, therefore her 'Fluttering Fanfare' costume came out almost perfectly and backgrounds will look fine. Sometimes it's better to put 'red shirt' in negative prompt since it might generate her in a red kimono/yukata(?) and certain artstyle LoRAs I tested with her tend to generate her without her cat ears and tail for some reason, so I guess it's best to keep her animal tags all the time too I guess.