Potter Watch [a HOO/HP fanfic](finished) [Demigods at Hogwarts]

After the Gaean war is over for the demigods and two years have passed, they are invited, by a strange new magical society they've never heard of, to go to a strange school for wizards called Hogwarts. Will Annabeth be the only one excited for more education? Harry, Ron, and Hermione travel to a place they've never...