Miyu, a young proprietress running a small eatery, decides to join a secretive corporate training program in accordance with her late husband's will. Within the company, she is assigned the degrading role known as "flesh toilet" and subjected to relentless, grueling training by the head of administration, the sales manager, delivery men, and others. Initially accepting her duties out of obligation, Miyu gradually begins to experience pleasure from her servitude. This shocking narrative deeply explores corporate power structures, interpersonal dynamics, and the profound psychological transformation Miyu undergoes.