Era of The Shinobi

Alright so, I'm not getting the point of joining the 2 villages when I make a character when I can't even select the clans that have Kekkei Genkai. The ones that you can choose have no information. Also when I read the tutorial I didn't see anything about rolling for a canon clan while in character creation. You guys call it a RP game where you see through your characters eyes, but you have such little choice on how you want to make your character.