Danzo orders Tenzo to kill Kakashi and take his Sharingan. Reluctant at first, Tenzo decides to carry out his orders after learning that the Leaf Shinobi has come to be known as “Kakashi the Friend Killer.”
The Sharingan is a disposable power.
الشارينغان قوّة يمكن التخلّص منها
El Sharingan es... Para empezar diremos 
que el Sharingan es un poder desechable
El Sharingan es... Para empezar diremos 
que el Sharingan es un poder desechable
O Sharingan é um poder com validade.
Сяринган — это расходуемая сила.