this is a spoiler free article. just read the blood of Olympias, and for 당신 people who want Percy to be the hero and not some one else don't read the book.i mean it is good but they replace Percy's view of things with Nico's view and Annebeth's view with Reyna's view.in other words Percy and Annebeth are just 더 많이 characters and are no longer the 히어로즈 또는 even the main characters.
p.s. they give this away at the beginning of the book 의해 as i said previously replacing Percy and Annebeth with Nico and Reyna.