We don't see Percy in the Lost Hero. He actually is the hero that is lost. It isn't until the end of the story that they start to realize where he might be. However, they think he was swapped out with Jason. Jason did have his memory wiped, so it is quite possible that Percy did too.
Yes, Annabeth
Well in the Son of Neptune book is about where Percy and Jason's have the others memories. So Percy only remembers some things about Annabeth.
Percy's only memory of his past life will be Annabeth in The Son Of Neptune, but it'll be "Frustratingly dim" ("A vague sadness weighed on his chest. Something told him he'd been to San Franciso before. The city had some connection to Annabeth- the only person he could remember from his past")-The Son Of Neptune
They both {cough} love each other. In the Lost Hero and The Son of Neptune they both miss each other.
Percy Jackson is the son of Poseidon.
it was about percy running away from the monsters and also trying to remember his past
His name is Polybotes, the anti-Neptune.
Polybotes: the rival of neptune
No
There actually is one . The Lost Hero is still about Percy , annabeth , grover and even camp half-blood!! There are 5 books to this series also. The second one is called Son Of Neptune.
No. Percy and Annabeth are only one year older in the new series. Jason Grace is the son of Zeus/Jupiter. He is the younger brother of Thalia Grace.
yes in Greek it would be Poseidon but Neptune is roman