Nokaze is a university student who spends her days attending classes and her nights working as a sex worker. She is known among her peers for her composed manners and elegant demeanor, but in her nighttime job she constantly runs into customers and colleagues who are extraordinary perverts. Whether it is a client with an unusual fetish, a coworker with a chaotic personality, or a manager with a rigid philosophy about running the establishment, Nokaze faces each situation with unadorned, blunt words and an unflappable attitude, refusing to be rattled by the bizarre world around her.

The story unfolds in a contemporary Japanese city, shifting between the mundane routines of university life and the heightened, often absurd atmosphere of the adult entertainment district where Nokaze works. The central conflict is less a single overarching plot and more a series of daily episodes in which Nokaze must negotiate the line between her ordinary daytime self and the demands of her nighttime role. Characters she encounters include a store manager who treats the female staff as precious inventory to be carefully managed, a stalker who surprisingly becomes a competent worker, and a variety of clients whose behavior ranges from comically strange to genuinely unsettling.

The narrative arcs are primarily episodic, each chapter spotlighting a different encounter or challenge. These vignettes reveal Nokaze’s resilience and her ability to assert boundaries without losing her cool. The series blends slice-of-life realism with ecchi humor and a seinen tone, offering a perspective on the underground industry that is neither sensationalized nor moralizing. Over time, recurring characters develop through their interactions with Nokaze, providing glimpses of deeper personal histories and the unspoken rules that govern this hidden world. The title itself suggests an instruction manual of sorts, as Nokaze becomes a de facto guide for navigating a society overrun by deviants.