Telepathy Shoujo Ran - 1x17 - Season 1, Episode 17- Followmy.tv

Ran, Rui, Midori, and Rin win a trip to a tropical island named Janome Island, or otherwise known as Snake Island. After stepping off the plane, Ran sees a snake coiled around one of the men on the plane over, Kenzo Akaza, whose great-grandfather had originally charted the island. Once they get to the hotel, Rui reveals more about he knows of the island, and the group goes out later to watch the sunset, where Ran hears intense voices again.