The second-ranked bodybuilding housewife in the nation, after being teased by a 1cm penis inserted into her during a deep squatting position… her muscular buttocks trembled uncontrollably, she orgasmed and ejaculated, becoming the ultimate sex slave! Kazuya Takashima DVMM-421

Kazuka, who won second place in a national bodybuilding competition, begins special training designed by a middle-aged coach in order to win the championship. This training involves maintaining a squatting position while holding a 1cm-deep, sexually harassing air chair. Although she hates it, she endures it to build muscle. However, after being fed aphrodisiacs and subjected to grotesque teasing with only the glans inserted, Kazuka gradually begins to crave a large penis, transforming into a wildly lewd, muscular female athlete who experiences intense, deep vaginal orgasms…