A variety of obscene acts unfold during muscle training! "Emi joined a gym that assembles a special training menu that would never be done at a normal gym. Emi, who is working hard to transform her body, is subjected to various obscene training by a perverted erotic trainer! She shows a pained expression at the obscene and intense training that awaits her, but soon the pain turns to pleasure, and Emi, with her body and mind pumped up, drinks the semen protein and obtains the strongest erotic body!"