Yogoreta Kanojo

Since the shocking gravure photo shoot, Kyouko has become strangely seductive, and Souji has also changed... The two have become lovers, and one day Souji invites his friend Segawa to Kyouko's house for study purposes, but Souji sneaks out saying he has something to do. When they are alone, Kyouko actively invites Segawa out! Souji spies on Kyouko and Segawa getting wild with a hidden camera in the room...?

(Source: Lune-soft, translated)