Himesaki, a home-visit instructor, had a dream of opening her own yoga studio. However, just before the opening, the sponsoring company was bought out by Terahashi, a half-grey gangster. With her business rights held hostage, she was forced to undergo an extreme nude photo shoot under the guise of promotion, all while her boyfriend was present. Her body was toyed with and soaked with diuretics right in front of her powerless boyfriend. Eventually, the boyfriend was kicked out, and the amateur-style training began. After countless creampies, she gradually fell into becoming a slut who craves cock...