JK Haru is a Sex Worker in Another World (Manga) Vol. 5

THIS WORLD AND I DONT GET ALONG. Harus coworker at the brothel, Shequraso, was sent to the military barracks, supposedly to sing for their comfort before they leave for the front. When she doesnt return when expected, Haru goes to find out whats up. Discovering that singing wasnt exactly the job, Haru offers to take Shequrasos place if theyll let her friend return home. But will her offer really save the day?