User blog comment:SayuriDarling/The Blood of Olympus Official Discussion/@comment-25540899-20141015084002

Hi everyone, I've never posted here before but I have a question that I can't find the answer to anywhere. Mars/Ares tells Frank that Percy will have to make a sacrifice that he won't be able to keep. Hera/Juno tells Percy that Annabeth will cause him the most problems. What in the world was this sacrifice? Did I skip over it by mistake or did Rick just completely overlook it?