Why do people act like it's some kind of mystery whether she is a real princess/cop or not? Haven't you read the goddamn endings? She is a police officer, or at least believes herself to be one. Her princess costume for going undercover and investigating Yumemi and Chiyuri's appearance. She literally says so.
>>49596161
I do believe that, actually. It's sort of the joke here - that her idea of an unassuming civillian disguise is a goddamn princess costume.