[ Hentai XXX ] Hyakki 3

A group of young people has chosen to go on a tour of a secret island with the help of a travel agency. People have abandoned the island, and the remains of a once-promising metropolis are continuing to deteriorate in the absence of fresh water. Each of the group members has a specific motive for visiting the island, whether it's to see their previous houses or to participate in a treasure hunt. Strange occurrences begin to occur during the group's stay, as old memories and sexual feelings begin to emerge among the members of the gathering. The trip takes a turn for the worst when a number of visitors are discovered killed, indicating that someone still exists on the deserted island.