This will not be the tipical gaurdian/son of chaos story.

Sentenced to Tartarus for the murder of Octavian, Percy finds an unexpected ally. But maybe it causes as many problems as it fixes.

Camp turns their back on him in their time of peace, tossing him aside like a blunted weapon. He discovers his parent's death and subsequently the orphaning of his sister. Vanishes from the Greek world only to return years later, changed. Pertemis pairing, Hestia patroning, and Hera adoption.