A hospital examination room. A patient came to receive treatment. However, the ones there were the sadistic doctor 'BOTAN' and 'RUIKO'. Realizing that the patient was a masochist, the two treated the man like a toy, subjecting his body to training under the guise of medical treatment. The anal sensitivity, after swallowing copious amounts of enema fluid, had reached its limit and could easily accommodate a fist. Nipples, urethra, anus... After undergoing various forms of training, the man's body began to resemble that of a woman.
