ボディービルコンテストで全国2位ののどかは1位になるため中年コーチ考案の特別トレーニングを始める。そのトレーニングはスクワット状態でチ○ポを1cm挿入したまま保つというセクハラ空気椅子だった。嫌がりながらも筋肉を鍛えるため耐えていたが、媚薬を飲まされながら先っぽ挿入で鬼焦らしされたのどかは次第にデカチ○ポを欲しがり狂ったように膣奥イキしまくるドスケベ筋肉女子アスリートに変貌した…
Nodoka, who placed second in a national bodybuilding contest, begins a special training regimen devised by her middle-aged coach in order to take first place. The training involves a sexually harassing "air squat" where she must maintain a squatting position with a penis inserted 1cm into her vagina. Although initially reluctant, she endures it to build muscle, but after being given an aphrodisiac and subjected to intense teasing with only the tip of the penis inserted, Nodoka gradually transforms into a lustful, muscular female athlete who craves a large penis and orgasms wildly deep inside her vagina…

– JavGG.net