Manga Kichikujima

Members of the Society for the Study of the Ruins of the University decide to take advantage of the opportunity that fell to them to explore the uninhabited island. However, they only thought that it was deserted, although in reality it was not. As soon as the first high school student moved away from the group, he was killed by a mysterious man in a pig mask. After their ship sinks, they are forced to stay on the island to try and survive with a mad assassin on it!