At the very beginning of Naruto, the Sharingan was introduced as a mysterious eye with the ability to copy ... Kishimoto also comments on the fact that Kakashi having the Sharingan was there ...

The eye-techniques (jap. Dojutsu) are among the most powerful in the whole series. The sheer amount of possibilities a user ...

His remaining Sharingan was given to Kakashi, who had lost his own eye shortly before that. Rin was the one who performed the medical transplant, and ever since that day, Kakashi of the Sharingan ...

Kakashi's ability ... jutsu in his lifetime. The Sharingan’s copying capabilities extend beyond jutsu that are dependent on ...