Mujintou de Elf to Kyoudou Seikatsu

Synopsis:

Kento, 30, won a lottery prize of one billion yen. He purchased a small, uninhabited island off the coast of Southern Japan so that he may live a pleasant, peaceful life for the remainder of his days. But one day he discovers a woman who should not be there on his beach, unconscious. He sees some very sharp edges as he rushes up to see how she is doing. For a regular guy like Kento, the actions Elize brought from the other world are a little bit exciting. Both "wandering elf" and "a naive middle-aged person." Now is the time for them to live together in harmony on a resort island.