Description: Let's go on a trip to a southern island! Or so we thought, until we got shipwrecked on a mysterious deserted island!? And it's another world!? What's going on~!? After hearing a request from a god in a dream, we of the exploration club decided to revitalize this otherworldly island, Harem Island, and turn it into a tourist destination full of people. There are plants we've never seen before and the beautiful older sisters of the island. If we work hard we might be able to make this place thrive. But... 'Can we really go home?' Suddenly overwhelmed by anxiety, I ended up clinging to the guy I've been secretly in love with. But I can't hold these feelings back anymore! I've always wanted to say it... I love you! The exploration club of one guy and three girls drifts across the ocean and washes ashore on Harem Island, a southern island that is 99% women. A free-for-all harem paradise is about to begin!