Female College Student's Skirt(1992)

Akiko, Chinami, and Yukari are students at Shirayuki Women's University. One day, with final exams fast approaching, Akiko receives a call from Yukari pleading for help. It seems she's being held captive somewhere near the Izu coast, a place the three of them visited last year. Akiko and Chinami head to Izu, but a trap awaits them there…