Jutaijima Idea

Alright now this is by no means a fully fleshed out idea, but basically it's based off of the hentai Jutaijima. In a nutshell a class of high schoolers are on a cruise ship that gets caught in a storm and a bunch of them end up stranded on a deserted island. The survivors are all girls except for one boy whom the girls aren't very fond of, they find him unattractive and have no interest in him sexually. As they explore the island they find buildings and signs that people had been there at one point but have all since died/left. As time goes on the women find themselves becoming increasingly horny, with no way to satisfy these urges, they soon discover that the cause of the islands misfortune is a disease that affects women, making them increasingly horny until eventually they die of cardiac arrest. The only treatment to this disease seems to be semen, but it's only a temporary fix so multiple "doses" are required. Left with no other options, the girls must now rely on the guy they rejected to save their lives. So with that explanation, the rp would revolve around a similar idea with a group of girls essentially using Kai to keep themselves alive as they try to adapt to their new reality. The different girls, of course, would have different personalities naturally. Some are more dominant, tsundere types who claim to only be doing it to keep themselves alive, others are more sensitive, gentle types who actually ask for his help and even try to thank him for his assistance, really the possibilities are endless. I'm only looking for females for this, but I'm more then willing to discuss the idea further with anyone who wishes to use it for themselves.