Will this still sell? !!!Please Read Easy Ten Points!!! and its short.?

My book is about a demi-god. well kindoff. He has the blood of several gods in him but he also has some mortal. I was wondering if this would be like a PJ rip off because it is nothing like PJ and i have read them. He is not even a demi-god technakly i guess but i was still wondering if it would sell.