Shiori-chan, with her bursting J-cup busty breasts, finds her boyfriend's indifferent attitude to be her recent worry. Despite her best efforts to serve him with her busty breasts and tight pussy, his reactions are unsatisfactory. It turns out that this boyfriend is actually a perverted man who gets fully erect during cuckold plays! He gathers his mischievous friends, thoroughly humiliates and torments Shiori for their enjoyment. The men's hands roam over Shiori's soft skin, lewd toys assault her holes, and her busty breasts are toyed with. In the end, multiple loads of cum defile Shiori-chan completely!