Board Thread:Naruto Discussions/@comment-732150-20160125002919/@comment-756329-20160126201346

BakumatsuWarrior wrote: That's because Kishi prefers focusing on the Uchiha 90% of the time, other clans be damned.

This is why, I'm certain in reality he actually is researching his heritage and such, but unless your name is "Uchiha" there's no backstory whatsoever.