User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-50.98.199.110-20130216004714/@comment-3146930-20130216020309

Just because Nico has visited Camp Jupiter, that doesn't make him any less of a Greek demigod. I mean Percy is/was one of the praetors for Camp Jupiter, but that doesn't make him a son of Neptune. Also, the POV are told from the viewpoints of the seven of the prophecy.