Board Thread:Naruto Discussions/@comment-12509038-20140806073433/@comment-3568954-20140807021905

WindStar7125 wrote: Jashin Uchiha wrote: It only drains non-Uchihas more because they can't turn it off Actionmanrandell is right. This time the eyes weren't implanted like Kakashi before or Nagato. The chakra in Obito's optic nerves, plus his own chakra reserves, were transferred to Kakashi. And Obito said they might be temporary, so Kakashi can turn it off. Kishi's not gonna have Kakashi close/cover both his eyes when he isn't using them, c'mon.

the chakra in obito's optic nerves are the same chakra as the chakra in his reserves what happened was kakashi's optic nerves reacted to obito's chakra and awakened his very own sharingan that just so happens to have the visual prowess of obito's eyes