First of all I'm not a big fan of Percy Jackson series and have never read the books and only seen some of the first movie, but I'm very interested in mythology and stuff like that and am just coming up with an idea in my mind about something that I guess could be considered similar to the Percy Jackson series from what I seen of the first movie and movie previews. Instead of a book series about Ancient Greek mythology being real I have an idea for a possible series of books about Norse mythology being real, well sort of. The gods and goddesses of Norse mythology were actually advanced human like aliens who knew about magic and who came to earth long ago to help with it's creation. The story begins with with two distant cousins about the same age one who's a teenage boy and another who's a teenage girl (haven't thought of names yet). The two aren't even aware that they are cousins in the beginning until they are told so by a family member that they are cousins and that they are distant descendants of the Norse “god” Odin and that there is a secret group led by a mysterious masked man who wants to get rid of all those who are descendants of the Norse “god” Odin because of their power. I got this idea while watching ancient aliens on history channel last night so it's a new idea and I need to do more research on Norse mythology. Anyway is this too much like the Percy Jackson series.