Zangejima Junketsu ~Shojo no Chi o Motte Tsugunae!~

The protagonist, Kazuo, goes on an exploration tour to a deserted island with three female students and a busty female teacher. However, a mysterious girl named Leila who can read people's minds exposes that the teacher lied about the trip. The peaceful exploration tour turns into a lust-filled party full of deception and betrayal.