My Desert Island Survival with the Goddess

Due to a huge wave in the apocalypse, the goddess and I drifted to this uninhabited island. We have broken away from the luxurious life in the city and work hard to survive every day. Late at night, bursts of roars from the depths of the island stimulated my nervous and fragile nerves. There are no legal constraints here, and there is no moral bottom line at all. When they attack their companions, I know they have lost their humanity. In order to protect myself and the goddess, I took up arms and started a desperate counterattack!