Originally Posted by stubborn_narut0
Something which often tingles my brain waves is how was lee able to graduate from the academy?
That's a good question. Maybe he had an exam that was different than Naruto's, like something with only taijutsu or Gai put in a good word for him.
Here's a thought, this is not my theory but it's interesting.
We know that someone was hunting people with bloodlines, Haku's clan was hunted down for their bloodline ability to create ice, and Kimimaro's clan was extinct (I don't remember the reason). But we do know Kimimaro had a mysterious illness that made him weaker and cough blood.
Now we get to the interesting part, Uchiha's are another clan with a bloodline ability (sharingan) that were hunted down and are now extinct almost. Itachi had a mysterious disease that made him cough blood.
Could it be that Tobi wants to eradicate all bloodline clans and is able to create an artificial disease?