First day of school

Yeah, I know. Cliché. But I really wanted to try one of these! By the way, it happens after the Titan War ;)
This is my first fanfiction.. If you like it, please leave a comment, and maybe I'll continue it! Blue chocolate-chip cookies for all!
Cover art by Burdge.
I do not own Percy Jackson. Rick Riordan does. :)
Edit: Thank you to everyone who's voted! Blue cake for you! :D