Tsubasa Hachino visits an esthetic salon lured by a free campaign, only to discover the treatment's true nature: a method designed to boost female hormones while meticulously stimulating every part of her body to intensify pleasure. As her brain becomes flooded with pleasure-inducing chemicals, further stimulation targets her uterus, causing her to convulse uncontrollably while remaining immersed in ecstasy. Even after squirting, she cannot stop, her abdominal muscles twitching incessantly. In the midst of this overwhelming sensation, Tsubasa finds herself unable to quit the salon visits, believing they are essential for advancing her career.