This is part one of the demo version, but you'll still be able to get an idea of the main gameplay and some hentai content. The story starts with a disaster. The ship has been damaged and the survivors must save themselves to reach the nearest island. You and the group of girls are able to set up a very basic settlement on the beach. However, you will need to work hard to make it suitable for living and wait for help. This isn't to mention that this island is not easy! Explore locations, find resources, and be aware of potential dangers. Also, keep an eye out for opportunities to get laid. This will increase morale during these difficult days.