User blog comment:SayuriDarling/Rick Riordan Q&A Session/@comment-4649443-20130526233826/@comment-10218971-20130605113107

If it's going to be 18+, you can't start halfway through the series. I mean, let's not go too in depth, but Percy is a very virtuous guy. I just can't see him doing, um, doing, uh, ... you know what i mean.