"Oh no!" Relying on his Byakugan, Neji clearly saw the changes in the tomoe of Sasuke's right eye, and his brow furrowed.
Unlike the Byakugan, the Uchiha's Sharingan gave a tremendous boost to its wielder with every single tomoe that awakened.
Back in Konoha, there was even a consensus that anyone possessing a three-tomoe Sharingan was guaranteed to be a Jonin.
Chapter 33