Epilogue:
After the wars against Kronos and the Titans and Gaea and the Giants, the gods of Olympus had supposedly finally run out of enemies for their demigod children to battle, and with the repaired relationship of the Greeks and Romans, it seemed as though a new era of peace had finally begun. And with Python still in control of the Delphic Oracle, no more prophecies could be issued, except from the Sibylline Books, which were still only stored Ella's memory, so it was hard to tell exactly what was a prophecy and what was just random information, and still, it couldn't be predicted as to when they were going to occur.
Which was totally fine with all of the demigod heroes, who thought that life without quests sounded pretty good right about now. All they wanted was a little normal in their lives now, which, for a demigod meant only one or two deadly monster attacks a day, not one or two deadly monster attacks an hour.
Especially 2 demigods by the names of Percy Jackson and Annabeth Chase. After all of the crazy things they've gone through, especially Tartarus, the 2 of them just wanted to live their lives in peace together, no more backstabbing friends, no more running errands for gods who lose their weapons, no more crazy wars and definitely no more repeat trips through the biggest pit of hell ever. All the son of Poseidon and the daughter of Athena wanted now was to live a nice quiet life together.
And they aren't only ones thinking along those lines. Jason and Piper had actually enrolled in Annabeth's boarding school, mainly because after nearly dying in Greece, they wanted a little dose of reality, especially since ever since Gaea's defeat, the monster attacks had been slowing down. The only real excitement they'd gotten right after Gaea's defeat was when Leo Valdez returned from the supposed dead on board Festus's back with Calypso in tow.
Frank and Hazel had returned to Camp Jupiter as true heroes of Olympus with all their past criminal records expunged, as were the records of Percy, Annabeth, Jason, Piper, Leo and Reyna. One of Frank's first orders of business as a Praetor of Rome was to renovate the shrine of Neptune into an actual temple towards his grandfather, since even Pluto had a real temple, and all Neptune had was toolshed. And considering that both he and Percy had proven that the sea god was important enough to give proper tribute to, the shrine to Neptune was abolished and a gleaming new temple to the sea god was built, roughly the size of the temple of Jupiter Optimus Maximus and also a temple to Minerva was constructed, which was actually constructed to show the wisdom goddess's military importance by putting a replica of the Athena Parthenos in it. Hazel had quickly risen to become the head centurion of the 5th cohort, which had become the pride of Camp Jupiter, as it had housed all of the Legion's greatest heroes.
Nico finally found peace and acceptance in Camp Half Blood and finally decided to come out of the shadows and had even begun a relationship with Will Solace. He had a real life now where he wasn't treated like a freak, but the way he should've been treated all along. Like a hero of Olympus, since that's what he was.
Even Reyna managed to find a happy ending with her head centurion, Mike Kahale, son of Venus.
And it wasn't just the relationships between the Greeks and Romans that had been built, but relationships with other pantheons were also forged.
Through Percy and Annabeth's adventures with Carter and Sadie Kane have allowed the demigods and magicians to form new bonds of friendship as well. And through Annabeth's relationship with her cousin Magnus Chase, the son of the Norse god Frey, allowed the Greek and Romans to repair their relationships with their Norse brethren.
Anyway, now that the wars were finally over, Percy and Annabeth were starting to get serious about thinking about their future, for right now, really all they knew about the future was that living it without each other was simply not an option anymore, if it ever was in the first place.