Ascension of the Fallen
Millennia ago, he was cast from Olympus, exiled to the Pit. Olympus quakes in fear at the return of the Fallen. As the Titans rise, the eldest of Kronos and Rhea returns with a vengeance. No TOA. Disclaimer: I don't own anything. Perseus x Hestia x Calypso! Crossposted on FFN, Wattpad, and AO3.