Calypso Jackson's Story
So I'm pretty sure you've heard of Perseus Jackson. Yeah, son of the sea god, hero of both camps, connoisseur of blue food, yadda yadda yadda. Okay, now what if I snapped my fingers in front of your face and said, bam, he had a twin sister? You'd scoff, probably. Say something about overused fanfiction ideas. And yeah...