The witch of the Ihanashi

This game does not support English, the following is Japanese description.A boy moves to a remote island in Okinawa and learns that his grandfather, who was supposed to take care of him, has disappeared. When he was ready to fend for himself on a remote island, he met a girl who called herself a witch. A girl who uses magic from another world and her life on a remote island where Ryukyuan culture is rooted. What fate awaits these two?