JK Haru is a Sex Worker in Another World summary: Due to pervasive male chauvinism, women are often denied the opportunity to reach their full potential, limiting them to mere survival. Haru Koyama's teenage years were unremarkable until a traumatic event transported her to an alternate universe dominated by gender inequality. Lacking notable skills, Haru must toil at Blue Cat Nocturne, a sordid establishment that operates as both a bar and a brothel, catering to the depraved desires of its patrons.