The Life of a Legend- A Percy Jackson Fanfiction

After the seven dead, Percy feels that he has lost everything. But he is still not broken Then, when he is awarded, everything goes wrong. He becomes a helper of demigods and he finally thinks he is at home. But fates have a lot in store for him... Two more wars to be exact...
Why is the book starting before the end of Blood Of Olympus? Why doesn't Percy have Riptide? Why are the wars happening? Why did Percy change his own destiny? Why would Percy be killed and still be alive? Why would he not go to Esylum? Why would Percy be of three different pantheons? Why are some Kanes and Chases involved. And finally, why are you still reading the description? Go and read the book.

Book #1: The life of a legend(this book)
Series name: The Illiad of Percy Jackson.

Teaser: (this is some part of the next great prophecy):

A demigod of 3 different Pantheons too good,
Shall use all his powers to save where once Olympus stood.
As the most powerful of his kind,
He would try everything in his will to rewind,
Then something he will find,
That will make him try to win with all his might,
But he may or may not be right.
The person who was not always bad,
and was corrupted by the sad,
will strike a war at two pantheons of his,
The hero's mortal essence will die with bliss.

[This is not the complete prophecy... Rest of it, you will know once you read]

Edit: Many of you have complained that Sally is not there and Percy is not depressed enough when he looses Annabeth. I assure you that there is a reason behind it which would unfold later on.