Naoto Shirogane is a detective who has long struggled with insecurity about her identity. She presents herself as stoic and speaks in an unusually formal way, but deep down she still has yet to fully grow up. As she was forced to grow up too fast and obscure the truth about herself, she never developed certain social skills on time and can be quite fluttery. In the pursuit of embracing her femininity, Naoto has gained some weight, becoming quite curvy.